diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 99a3cd084..c05c1b13b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -724,6 +724,9 @@ importers:
       '@rivet-dev/agent-os-jq':
         specifier: workspace:*
         version: link:../jq
+      '@rivet-dev/agent-os-pngcrush':
+        specifier: workspace:*
+        version: link:../pngcrush
       '@rivet-dev/agent-os-ripgrep':
         specifier: workspace:*
         version: link:../ripgrep
@@ -768,6 +771,18 @@ importers:
         specifier: ^5.9.2
         version: 5.9.3
 
+  registry/software/ffmpeg:
+    devDependencies:
+      '@rivet-dev/agent-os-registry-types':
+        specifier: link:../../../packages/registry-types
+        version: link:../../../packages/registry-types
+      '@types/node':
+        specifier: ^22.10.2
+        version: 22.19.15
+      typescript:
+        specifier: ^5.9.2
+        version: 5.9.3
+
   registry/software/file:
     devDependencies:
       '@rivet-dev/agent-os-registry-types':
@@ -816,6 +831,18 @@ importers:
         specifier: ^5.9.2
         version: 5.9.3
 
+  registry/software/gog:
+    devDependencies:
+      '@rivet-dev/agent-os-registry-types':
+        specifier: link:../../../packages/registry-types
+        version: link:../../../packages/registry-types
+      '@types/node':
+        specifier: ^22.10.2
+        version: 22.19.15
+      typescript:
+        specifier: ^5.9.2
+        version: 5.9.3
+
   registry/software/grep:
     devDependencies:
       '@rivet-dev/agent-os-registry-types':
@@ -876,6 +903,18 @@ importers:
         specifier: ^5.9.2
         version: 5.9.3
 
+  registry/software/pngcrush:
+    devDependencies:
+      '@rivet-dev/agent-os-registry-types':
+        specifier: link:../../../packages/registry-types
+        version: link:../../../packages/registry-types
+      '@types/node':
+        specifier: ^22.10.2
+        version: 22.19.15
+      typescript:
+        specifier: ^5.9.2
+        version: 5.9.3
+
   registry/software/ripgrep:
     devDependencies:
       '@rivet-dev/agent-os-registry-types':
@@ -900,6 +939,18 @@ importers:
         specifier: ^5.9.2
         version: 5.9.3
 
+  registry/software/slack-cli:
+    devDependencies:
+      '@rivet-dev/agent-os-registry-types':
+        specifier: link:../../../packages/registry-types
+        version: link:../../../packages/registry-types
+      '@types/node':
+        specifier: ^22.10.2
+        version: 22.19.15
+      typescript:
+        specifier: ^5.9.2
+        version: 5.9.3
+
   registry/software/sqlite3:
     devDependencies:
       '@rivet-dev/agent-os-registry-types':
diff --git a/registry/Makefile b/registry/Makefile
index 2f90ee938..555fc174d 100644
--- a/registry/Makefile
+++ b/registry/Makefile
@@ -14,7 +14,7 @@ TS_MARKER   := $(MARKER_DIR)/ts-built
 
 # Command packages (excludes _types and meta-packages)
 CMD_PACKAGES := coreutils sed grep gawk findutils diffutils tar gzip \
-                curl http-get wget zip unzip jq ripgrep fd tree file sqlite3 duckdb yq codex git
+                curl http-get wget zip unzip jq ripgrep fd tree file sqlite3 duckdb yq codex git pngcrush
 
 # Meta-packages
 META_PACKAGES := common build-essential everything
@@ -186,6 +186,10 @@ $(COPY_MARKER): $(RUST_MARKER) $(C_MARKER)
 	@mkdir -p software/git/wasm
 	@[ -f "$(COMMANDS_DIR)/git" ] && cp -f "$(COMMANDS_DIR)/git" software/git/wasm/ || echo "  WARN: git not found"
 
+	@# --- pngcrush (C build) ---
+	@mkdir -p software/pngcrush/wasm
+	@[ -f "$(COMMANDS_DIR)/pngcrush" ] && cp -f "$(COMMANDS_DIR)/pngcrush" software/pngcrush/wasm/ || echo "  WARN: pngcrush not found"
+
 	@echo "=== Copy complete ==="
 	@touch $(COPY_MARKER)
 
diff --git a/registry/native/c/Makefile b/registry/native/c/Makefile
index ad30f84b1..3fdc2ed76 100644
--- a/registry/native/c/Makefile
+++ b/registry/native/c/Makefile
@@ -63,7 +63,7 @@ NATIVE_CFLAGS := -O0 -g -I include/
 COMMANDS_DIR ?= ../target/wasm32-wasip1/release/commands
 
 # Real commands to install (add command names as they are opted in)
-COMMANDS := zip unzip envsubst sqlite3 curl wget duckdb
+COMMANDS := zip unzip envsubst sqlite3 curl wget duckdb pngcrush
 
 # Programs requiring patched sysroot (Tier 2+ custom host imports)
 PATCHED_PROGRAMS := isatty_test getpid_test getppid_test getppid_verify userinfo pipe_test dup_test spawn_child spawn_exit_code pipeline kill_child waitpid_return waitpid_edge syscall_coverage getpwuid_test signal_tests sigaction_behavior delayed_tcp_echo delayed_kill pipe_edge tcp_echo tcp_server udp_echo unix_socket signal_handler http_get dns_lookup sqlite3_cli curl wget
@@ -88,10 +88,10 @@ endif
 
 WASM_PROG_NAMES := $(sort $(basename $(notdir $(SOURCES))) $(CUSTOM_WASM_PROG_NAMES))
 NATIVE_PROG_NAMES := $(basename $(notdir $(SOURCES)))
-PROGRAM_REPORT_NAMES := $(WASM_PROG_NAMES) duckdb
+PROGRAM_REPORT_NAMES := $(WASM_PROG_NAMES) duckdb pngcrush
 
 # Default WASM output targets
-EXTRA_WASM_OUTPUTS := $(BUILD_DIR)/duckdb
+EXTRA_WASM_OUTPUTS := $(BUILD_DIR)/duckdb $(BUILD_DIR)/pngcrush
 WASM_OUTPUTS := $(addprefix $(BUILD_DIR)/,$(WASM_PROG_NAMES)) $(EXTRA_WASM_OUTPUTS)
 # Native output targets
 NATIVE_OUTPUTS := $(addprefix $(NATIVE_DIR)/,$(NATIVE_PROG_NAMES))
@@ -144,6 +144,9 @@ MINIZIP_URL := https://github.com/madler/zlib/archive/refs/tags/v1.3.1.zip
 DUCKDB_VERSION := v1.5.0
 DUCKDB_GIT_DESCRIBE := $(DUCKDB_VERSION)-0-g0123456789
 DUCKDB_URL := https://github.com/duckdb/duckdb/archive/refs/tags/$(DUCKDB_VERSION).tar.gz
+# pngcrush — PNG optimizer with bundled libpng and zlib
+PNGCRUSH_TAG := pngcrush-20171101
+PNGCRUSH_URL := https://github.com/pnggroup/pngcrush/archive/refs/tags/$(PNGCRUSH_TAG).tar.gz
 
 LIBS_DIR    := libs
 LIBS_CACHE  := .cache/libs
@@ -198,8 +201,17 @@ libs/duckdb/CMakeLists.txt:
 	@mkdir -p $(LIBS_DIR)/duckdb
 	@tar -xzf "$(LIBS_CACHE)/duckdb.tar.gz" --strip-components=1 -C $(LIBS_DIR)/duckdb
 
+libs/pngcrush/pngcrush.c:
+	@echo "Fetching pngcrush $(PNGCRUSH_TAG)..."
+	@mkdir -p $(LIBS_CACHE)
+	@curl -fSL "$(PNGCRUSH_URL)" -o "$(LIBS_CACHE)/pngcrush.tar.gz"
+	@rm -rf $(LIBS_DIR)/pngcrush
+	@mkdir -p $(LIBS_DIR)/pngcrush
+	@tar -xzf "$(LIBS_CACHE)/pngcrush.tar.gz" --strip-components=1 -C $(LIBS_DIR)/pngcrush
+	@cp pngcrush-overlay/pnglibconf.h pngcrush-overlay/cexcept.h $(LIBS_DIR)/pngcrush/
+
 .PHONY: fetch-libs clean-libs
-fetch-libs: libs/sqlite3/sqlite3.c libs/zlib/zutil.c libs/minizip/ioapi.c libs/cjson/cJSON.c libs/curl/lib/easy.c libs/duckdb/CMakeLists.txt
+fetch-libs: libs/sqlite3/sqlite3.c libs/zlib/zutil.c libs/minizip/ioapi.c libs/cjson/cJSON.c libs/curl/lib/easy.c libs/duckdb/CMakeLists.txt libs/pngcrush/pngcrush.c
 
 clean-libs:
 	rm -rf $(LIBS_DIR) $(LIBS_CACHE)
@@ -513,6 +525,26 @@ $(NATIVE_DIR)/unzip: programs/unzip.c $(ZLIB_SRCS) $(MINIZIP_UNZIP_SRCS)
 	@mkdir -p $(NATIVE_DIR)
 	$(NATIVE_CC) $(NATIVE_CFLAGS) $(ZIP_INCLUDES) -o $@ programs/unzip.c $(ZLIB_SRCS) $(MINIZIP_UNZIP_SRCS) -lz
 
+# pngcrush: PNG optimizer — compiles pngcrush.c with bundled libpng (unified) and zlib
+PNGCRUSH_ZLIB_SRCS := $(addprefix libs/pngcrush/,adler32.c compress.c crc32.c deflate.c \
+                       infback.c inffast.c inflate.c inftrees.c trees.c uncompr.c zutil.c)
+PNGCRUSH_CFLAGS    := -DLIBPNG_UNIFIED -DNO_GZ -isystem pngcrush-overlay -Ilibs/pngcrush \
+                      -D_WASI_EMULATED_PROCESS_CLOCKS
+
+$(BUILD_DIR)/pngcrush: libs/pngcrush/pngcrush.c $(WASI_SDK_DIR)/bin/clang
+	@mkdir -p $(BUILD_DIR)
+	$(CC) --target=wasm32-wasip1 --sysroot=$(WASI_SDK_DIR)/share/wasi-sysroot -O2 -I include/ \
+	    $(PNGCRUSH_CFLAGS) -o $@.wasm \
+	    libs/pngcrush/pngcrush.c $(PNGCRUSH_ZLIB_SRCS) -lm \
+	    -lwasi-emulated-process-clocks
+	wasm-opt -O3 --strip-debug $@.wasm -o $@
+	@rm -f $@.wasm
+
+$(NATIVE_DIR)/pngcrush: libs/pngcrush/pngcrush.c
+	@mkdir -p $(NATIVE_DIR)
+	$(NATIVE_CC) $(NATIVE_CFLAGS) $(PNGCRUSH_CFLAGS) -o $@ \
+	    libs/pngcrush/pngcrush.c $(PNGCRUSH_ZLIB_SRCS) -lm -lz
+
 # curl_test: links libcurl (HTTP/HTTPS build for WASM via host_net + host_tls)
 CURL_SRCS := $(wildcard libs/curl/lib/*.c) $(wildcard libs/curl/lib/vauth/*.c) \
              $(wildcard libs/curl/lib/vtls/*.c) $(wildcard libs/curl/lib/vquic/*.c) \
diff --git a/registry/native/c/pngcrush-overlay/cexcept.h b/registry/native/c/pngcrush-overlay/cexcept.h
new file mode 100644
index 000000000..6d645cdc5
--- /dev/null
+++ b/registry/native/c/pngcrush-overlay/cexcept.h
@@ -0,0 +1,59 @@
+/* cexcept.h — WASI-compatible replacement for cexcept exception handling.
+ *
+ * The original cexcept.h uses setjmp/longjmp which requires the WASM
+ * Exception Handling proposal. This simplified version uses a global
+ * flag and goto-style flow control that works on all WASM runtimes.
+ *
+ * Limitations: nested Try/Catch blocks are not reentrant (fine for
+ * pngcrush which uses them sequentially). Throw from deeply nested
+ * calls will abort the process via exit(1).
+ */
+
+#ifndef CEXCEPT_H
+#define CEXCEPT_H
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#define define_exception_type(etype) \
+struct exception_context { \
+  int caught; \
+  int has_throw; \
+  volatile struct { etype etmp; } v; \
+}
+
+#define init_exception_context(ec) ((void)((ec)->caught = 0, (ec)->has_throw = 0))
+
+/* Try/Catch: uses a simple flag-based mechanism instead of setjmp/longjmp.
+ * Throw sets the flag and the Catch block checks it.
+ * NOTE: Throw from a subroutine (not directly in the Try block) will
+ * call exit(1) since we can't longjmp back. pngcrush's error handler
+ * (pngcrush_cexcept_error) calls Throw, which is invoked from libpng
+ * callbacks, so we handle that with exit(). */
+#define Try \
+  { \
+    the_exception_context->caught = 0; \
+    the_exception_context->has_throw = 0; \
+    {  \
+      do
+
+#define exception__catch(action) \
+      while (the_exception_context->caught = 0, \
+             the_exception_context->caught); \
+    } \
+    if (the_exception_context->has_throw) { \
+      the_exception_context->caught = 1; \
+    } \
+  } \
+  if (!the_exception_context->caught || action) { } \
+  else
+
+#define Catch(e) exception__catch(((e) = the_exception_context->v.etmp, 0))
+#define Catch_anonymous exception__catch(0)
+
+#define Throw \
+  for (;; exit(1)) \
+    for (the_exception_context->has_throw = 1 ;; ) \
+      the_exception_context->v.etmp =
+
+#endif /* CEXCEPT_H */
diff --git a/registry/native/c/pngcrush-overlay/pnglibconf.h b/registry/native/c/pngcrush-overlay/pnglibconf.h
new file mode 100644
index 000000000..f7d2af5ae
--- /dev/null
+++ b/registry/native/c/pngcrush-overlay/pnglibconf.h
@@ -0,0 +1,221 @@
+/* libpng 1.6.32 STANDARD API DEFINITION */
+
+/* pnglibconf.h - library build configuration */
+
+/* Libpng version 1.6.32 - August 24, 2017 */
+
+/* Copyright (c) 1998-2017 Glenn Randers-Pehrson */
+
+/* This code is released under the libpng license. */
+/* For conditions of distribution and use, see the disclaimer */
+/* and license in png.h */
+
+/* pnglibconf.h */
+/* Machine generated file: DO NOT EDIT */
+/* Derived from: scripts/pnglibconf.dfa */
+#ifndef PNGLCONF_H
+#define PNGLCONF_H
+/* options */
+#define PNG_16BIT_SUPPORTED
+#define PNG_ALIGNED_MEMORY_SUPPORTED
+/*#undef PNG_ARM_NEON_API_SUPPORTED*/
+/*#undef PNG_ARM_NEON_CHECK_SUPPORTED*/
+/*#undef PNG_POWERPC_VSX_API_SUPPORTED*/
+/*#undef PNG_POWERPC_VSX_CHECK_SUPPORTED*/
+#define PNG_BENIGN_ERRORS_SUPPORTED
+#define PNG_BENIGN_READ_ERRORS_SUPPORTED
+/*#undef PNG_BENIGN_WRITE_ERRORS_SUPPORTED*/
+#define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
+#define PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+#define PNG_COLORSPACE_SUPPORTED
+#define PNG_CONSOLE_IO_SUPPORTED
+#define PNG_CONVERT_tIME_SUPPORTED
+#define PNG_EASY_ACCESS_SUPPORTED
+/*#undef PNG_ERROR_NUMBERS_SUPPORTED*/
+#define PNG_ERROR_TEXT_SUPPORTED
+#define PNG_FIXED_POINT_SUPPORTED
+#define PNG_FLOATING_ARITHMETIC_SUPPORTED
+#define PNG_FLOATING_POINT_SUPPORTED
+#define PNG_FORMAT_AFIRST_SUPPORTED
+#define PNG_FORMAT_BGR_SUPPORTED
+#define PNG_GAMMA_SUPPORTED
+#define PNG_GET_PALETTE_MAX_SUPPORTED
+#define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#define PNG_INCH_CONVERSIONS_SUPPORTED
+#define PNG_INFO_IMAGE_SUPPORTED
+#define PNG_IO_STATE_SUPPORTED
+#define PNG_MNG_FEATURES_SUPPORTED
+#define PNG_POINTER_INDEXING_SUPPORTED
+#define PNG_PROGRESSIVE_READ_SUPPORTED
+#define PNG_READ_16BIT_SUPPORTED
+#define PNG_READ_ALPHA_MODE_SUPPORTED
+#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
+#define PNG_READ_BACKGROUND_SUPPORTED
+#define PNG_READ_BGR_SUPPORTED
+#define PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+#define PNG_READ_COMPOSITE_NODIV_SUPPORTED
+#define PNG_READ_COMPRESSED_TEXT_SUPPORTED
+#define PNG_READ_EXPAND_16_SUPPORTED
+#define PNG_READ_EXPAND_SUPPORTED
+#define PNG_READ_FILLER_SUPPORTED
+#define PNG_READ_GAMMA_SUPPORTED
+#define PNG_READ_GET_PALETTE_MAX_SUPPORTED
+#define PNG_READ_GRAY_TO_RGB_SUPPORTED
+#define PNG_READ_INTERLACING_SUPPORTED
+#define PNG_READ_INT_FUNCTIONS_SUPPORTED
+#define PNG_READ_INVERT_ALPHA_SUPPORTED
+#define PNG_READ_INVERT_SUPPORTED
+#define PNG_READ_OPT_PLTE_SUPPORTED
+#define PNG_READ_PACKSWAP_SUPPORTED
+#define PNG_READ_PACK_SUPPORTED
+#define PNG_READ_QUANTIZE_SUPPORTED
+#define PNG_READ_RGB_TO_GRAY_SUPPORTED
+#define PNG_READ_SCALE_16_TO_8_SUPPORTED
+#define PNG_READ_SHIFT_SUPPORTED
+#define PNG_READ_STRIP_16_TO_8_SUPPORTED
+#define PNG_READ_STRIP_ALPHA_SUPPORTED
+#define PNG_READ_SUPPORTED
+#define PNG_READ_SWAP_ALPHA_SUPPORTED
+#define PNG_READ_SWAP_SUPPORTED
+#define PNG_READ_TEXT_SUPPORTED
+#define PNG_READ_TRANSFORMS_SUPPORTED
+#define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_READ_USER_CHUNKS_SUPPORTED
+#define PNG_READ_USER_TRANSFORM_SUPPORTED
+#define PNG_READ_bKGD_SUPPORTED
+#define PNG_READ_cHRM_SUPPORTED
+#define PNG_READ_eXIf_SUPPORTED
+#define PNG_READ_gAMA_SUPPORTED
+#define PNG_READ_hIST_SUPPORTED
+#define PNG_READ_iCCP_SUPPORTED
+#define PNG_READ_iTXt_SUPPORTED
+#define PNG_READ_oFFs_SUPPORTED
+#define PNG_READ_pCAL_SUPPORTED
+#define PNG_READ_pHYs_SUPPORTED
+#define PNG_READ_sBIT_SUPPORTED
+#define PNG_READ_sCAL_SUPPORTED
+#define PNG_READ_sPLT_SUPPORTED
+#define PNG_READ_sRGB_SUPPORTED
+#define PNG_READ_tEXt_SUPPORTED
+#define PNG_READ_tIME_SUPPORTED
+#define PNG_READ_tRNS_SUPPORTED
+#define PNG_READ_zTXt_SUPPORTED
+#define PNG_SAVE_INT_32_SUPPORTED
+#define PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_SEQUENTIAL_READ_SUPPORTED
+/* #define PNG_SETJMP_SUPPORTED -- disabled for WASI (no EH proposal) */
+#define PNG_SET_OPTION_SUPPORTED
+#define PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_SET_USER_LIMITS_SUPPORTED
+/* Simplified API disabled for WASI (requires setjmp/longjmp) */
+/* #define PNG_SIMPLIFIED_READ_AFIRST_SUPPORTED */
+/* #define PNG_SIMPLIFIED_READ_BGR_SUPPORTED */
+/* #define PNG_SIMPLIFIED_READ_SUPPORTED */
+/* #define PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED */
+/* #define PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED */
+/* #define PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED */
+/* #define PNG_SIMPLIFIED_WRITE_SUPPORTED */
+#define PNG_STDIO_SUPPORTED
+#define PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_TEXT_SUPPORTED
+#define PNG_TIME_RFC1123_SUPPORTED
+#define PNG_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_USER_CHUNKS_SUPPORTED
+#define PNG_USER_LIMITS_SUPPORTED
+#define PNG_USER_MEM_SUPPORTED
+#define PNG_USER_TRANSFORM_INFO_SUPPORTED
+#define PNG_USER_TRANSFORM_PTR_SUPPORTED
+#define PNG_WARNINGS_SUPPORTED
+#define PNG_WRITE_16BIT_SUPPORTED
+#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
+#define PNG_WRITE_BGR_SUPPORTED
+#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
+#define PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
+#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
+#define PNG_WRITE_FILLER_SUPPORTED
+#define PNG_WRITE_FILTER_SUPPORTED
+#define PNG_WRITE_FLUSH_SUPPORTED
+#define PNG_WRITE_GET_PALETTE_MAX_SUPPORTED
+#define PNG_WRITE_INTERLACING_SUPPORTED
+#define PNG_WRITE_INT_FUNCTIONS_SUPPORTED
+#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
+#define PNG_WRITE_INVERT_SUPPORTED
+#define PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
+#define PNG_WRITE_PACKSWAP_SUPPORTED
+#define PNG_WRITE_PACK_SUPPORTED
+#define PNG_WRITE_SHIFT_SUPPORTED
+#define PNG_WRITE_SUPPORTED
+#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
+#define PNG_WRITE_SWAP_SUPPORTED
+#define PNG_WRITE_TEXT_SUPPORTED
+#define PNG_WRITE_TRANSFORMS_SUPPORTED
+#define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
+#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+#define PNG_WRITE_bKGD_SUPPORTED
+#define PNG_WRITE_cHRM_SUPPORTED
+#define PNG_WRITE_eXIf_SUPPORTED
+#define PNG_WRITE_gAMA_SUPPORTED
+#define PNG_WRITE_hIST_SUPPORTED
+#define PNG_WRITE_iCCP_SUPPORTED
+#define PNG_WRITE_iTXt_SUPPORTED
+#define PNG_WRITE_oFFs_SUPPORTED
+#define PNG_WRITE_pCAL_SUPPORTED
+#define PNG_WRITE_pHYs_SUPPORTED
+#define PNG_WRITE_sBIT_SUPPORTED
+#define PNG_WRITE_sCAL_SUPPORTED
+#define PNG_WRITE_sPLT_SUPPORTED
+#define PNG_WRITE_sRGB_SUPPORTED
+#define PNG_WRITE_tEXt_SUPPORTED
+#define PNG_WRITE_tIME_SUPPORTED
+#define PNG_WRITE_tRNS_SUPPORTED
+#define PNG_WRITE_zTXt_SUPPORTED
+#define PNG_bKGD_SUPPORTED
+#define PNG_cHRM_SUPPORTED
+#define PNG_eXIf_SUPPORTED
+#define PNG_gAMA_SUPPORTED
+#define PNG_hIST_SUPPORTED
+#define PNG_iCCP_SUPPORTED
+#define PNG_iTXt_SUPPORTED
+#define PNG_oFFs_SUPPORTED
+#define PNG_pCAL_SUPPORTED
+#define PNG_pHYs_SUPPORTED
+#define PNG_sBIT_SUPPORTED
+#define PNG_sCAL_SUPPORTED
+#define PNG_sPLT_SUPPORTED
+#define PNG_sRGB_SUPPORTED
+#define PNG_tEXt_SUPPORTED
+#define PNG_tIME_SUPPORTED
+#define PNG_tRNS_SUPPORTED
+#define PNG_zTXt_SUPPORTED
+/* end of options */
+/* settings */
+#define PNG_API_RULE 0
+#define PNG_DEFAULT_READ_MACROS 1
+#define PNG_GAMMA_THRESHOLD_FIXED 5000
+#define PNG_IDAT_READ_SIZE PNG_ZBUF_SIZE
+#define PNG_INFLATE_BUF_SIZE 1024
+#define PNG_LINKAGE_API extern
+#define PNG_LINKAGE_CALLBACK extern
+#define PNG_LINKAGE_DATA extern
+#define PNG_LINKAGE_FUNCTION extern
+#define PNG_MAX_GAMMA_8 11
+#define PNG_QUANTIZE_BLUE_BITS 5
+#define PNG_QUANTIZE_GREEN_BITS 5
+#define PNG_QUANTIZE_RED_BITS 5
+#define PNG_TEXT_Z_DEFAULT_COMPRESSION (-1)
+#define PNG_TEXT_Z_DEFAULT_STRATEGY 0
+#define PNG_USER_CHUNK_CACHE_MAX 1000
+#define PNG_USER_CHUNK_MALLOC_MAX 8000000
+#define PNG_USER_HEIGHT_MAX 1000000
+#define PNG_USER_WIDTH_MAX 1000000
+#define PNG_ZBUF_SIZE 8192
+#define PNG_ZLIB_VERNUM 0 /* unknown */
+#define PNG_Z_DEFAULT_COMPRESSION (-1)
+#define PNG_Z_DEFAULT_NOFILTER_STRATEGY 0
+#define PNG_Z_DEFAULT_STRATEGY 1
+#define PNG_sCAL_PRECISION 5
+#define PNG_sRGB_PROFILE_CHECKS 2
+/* end of settings */
+#endif /* PNGLCONF_H */
diff --git a/registry/native/c/pngcrush-overlay/setjmp.h b/registry/native/c/pngcrush-overlay/setjmp.h
new file mode 100644
index 000000000..d920c0176
--- /dev/null
+++ b/registry/native/c/pngcrush-overlay/setjmp.h
@@ -0,0 +1,30 @@
+/* setjmp.h — stub for WASI targets without WASM Exception Handling.
+ *
+ * pngcrush uses cexcept.h (not setjmp) for its own error handling.
+ * However, the bundled libpng's simplified API (png_safe_execute)
+ * references setjmp/longjmp directly. Since pngcrush doesn't use
+ * the simplified API, these stubs satisfy the linker without
+ * requiring the WASM EH proposal.
+ *
+ * If setjmp is actually called at runtime, we abort.
+ */
+
+#ifndef _SETJMP_H
+#define _SETJMP_H
+
+#include <stdlib.h>
+
+typedef int jmp_buf[1];
+
+static inline int setjmp(jmp_buf env) {
+  (void)env;
+  return 0;
+}
+
+static inline _Noreturn void longjmp(jmp_buf env, int val) {
+  (void)env;
+  (void)val;
+  abort();
+}
+
+#endif /* _SETJMP_H */
diff --git a/registry/package.json b/registry/package.json
index d81fa8ad7..d5372ca85 100644
--- a/registry/package.json
+++ b/registry/package.json
@@ -16,7 +16,9 @@
   "devDependencies": {
     "@rivet-dev/agent-os-common": "link:software/common",
     "@rivet-dev/agent-os-core": "link:../packages/core",
+    "@rivet-dev/agent-os-coreutils": "link:software/coreutils",
     "@rivet-dev/agent-os-curl": "link:software/curl",
+    "@rivet-dev/agent-os-pngcrush": "link:software/pngcrush",
     "@rivet-dev/agent-os-posix": "link:../packages/posix",
     "@rivet-dev/agent-os-python": "link:../packages/python",
     "@secure-exec/core": "^0.2.1",
diff --git a/registry/software/everything/package.json b/registry/software/everything/package.json
index 83a5591ad..4de0ef102 100644
--- a/registry/software/everything/package.json
+++ b/registry/software/everything/package.json
@@ -37,7 +37,8 @@
     "@rivet-dev/agent-os-tree": "workspace:*",
     "@rivet-dev/agent-os-file": "workspace:*",
     "@rivet-dev/agent-os-yq": "workspace:*",
-    "@rivet-dev/agent-os-codex": "workspace:*"
+    "@rivet-dev/agent-os-codex": "workspace:*",
+    "@rivet-dev/agent-os-pngcrush": "workspace:*"
   },
   "devDependencies": {
     "@rivet-dev/agent-os-registry-types": "link:../../../packages/registry-types",
diff --git a/registry/software/everything/src/index.ts b/registry/software/everything/src/index.ts
index b523bbc86..8ffee47e0 100644
--- a/registry/software/everything/src/index.ts
+++ b/registry/software/everything/src/index.ts
@@ -16,6 +16,7 @@ import tree from "@rivet-dev/agent-os-tree";
 import file from "@rivet-dev/agent-os-file";
 import yq from "@rivet-dev/agent-os-yq";
 import codex from "@rivet-dev/agent-os-codex";
+import pngcrush from "@rivet-dev/agent-os-pngcrush";
 
 const everything = [
 	coreutils,
@@ -36,6 +37,7 @@ const everything = [
 	file,
 	yq,
 	codex,
+	pngcrush,
 ];
 
 export default everything;
@@ -58,4 +60,5 @@ export {
 	file,
 	yq,
 	codex,
+	pngcrush,
 };
diff --git a/registry/software/pngcrush/package.json b/registry/software/pngcrush/package.json
new file mode 100644
index 000000000..b6c354ec0
--- /dev/null
+++ b/registry/software/pngcrush/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "@rivet-dev/agent-os-pngcrush",
+  "version": "0.0.0",
+  "type": "module",
+  "license": "Apache-2.0",
+  "description": "PNG optimizer for agentOS (pngcrush)",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "files": [
+    "dist",
+    "wasm"
+  ],
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    }
+  },
+  "scripts": {
+    "build": "tsc",
+    "check-types": "tsc --noEmit"
+  },
+  "devDependencies": {
+    "@rivet-dev/agent-os-registry-types": "link:../../../packages/registry-types",
+    "@types/node": "^22.10.2",
+    "typescript": "^5.9.2"
+  }
+}
diff --git a/registry/software/pngcrush/src/index.ts b/registry/software/pngcrush/src/index.ts
new file mode 100644
index 000000000..1b57b1f9e
--- /dev/null
+++ b/registry/software/pngcrush/src/index.ts
@@ -0,0 +1,20 @@
+import type { WasmCommandPackage } from "@rivet-dev/agent-os-registry-types";
+import { resolve, dirname } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+const pkg = {
+	name: "pngcrush",
+	aptName: "pngcrush",
+	description: "PNG optimizer (pngcrush)",
+	source: "c" as const,
+	commands: [
+		{ name: "pngcrush", permissionTier: "read-write" as const },
+	],
+	get commandDir() {
+		return resolve(__dirname, "..", "wasm");
+	},
+} satisfies WasmCommandPackage;
+
+export default pkg;
diff --git a/registry/software/pngcrush/tsconfig.json b/registry/software/pngcrush/tsconfig.json
new file mode 100644
index 000000000..8f24167af
--- /dev/null
+++ b/registry/software/pngcrush/tsconfig.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "./dist",
+    "rootDir": "./src"
+  },
+  "include": ["src/**/*"]
+}
diff --git a/registry/tests/wasmvm/pngcrush.test.ts b/registry/tests/wasmvm/pngcrush.test.ts
new file mode 100644
index 000000000..20153b549
--- /dev/null
+++ b/registry/tests/wasmvm/pngcrush.test.ts
@@ -0,0 +1,120 @@
+/**
+ * Integration tests for pngcrush WASM command.
+ *
+ * Verifies pngcrush can optimize a PNG file, produces valid output,
+ * and shows version/help info using the AgentOs API with real WASM binaries.
+ */
+
+import { existsSync } from "node:fs";
+import { deflateSync } from "node:zlib";
+import { describe, it, expect, afterEach, beforeEach } from "vitest";
+import { AgentOs } from "@rivet-dev/agent-os-core";
+import coreutils from "@rivet-dev/agent-os-coreutils";
+import pngcrush from "../../software/pngcrush/dist/index.js";
+
+const hasCoreutils = existsSync(coreutils.commandDir);
+const hasPngcrush = existsSync(pngcrush.commandDir);
+
+function skipReason(): string | false {
+  if (!hasCoreutils) return "coreutils WASM binaries not available";
+  if (!hasPngcrush) return "pngcrush WASM binary not available";
+  return false;
+}
+
+/**
+ * Generate a minimal valid 1x1 red PNG using Node's zlib for correct compression.
+ */
+function createMinimalPng(): Uint8Array {
+  const buf: number[] = [];
+
+  // PNG signature
+  buf.push(0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a);
+
+  // IHDR chunk: 1x1, 8-bit RGB
+  const ihdrData = [
+    0x00, 0x00, 0x00, 0x01, // width = 1
+    0x00, 0x00, 0x00, 0x01, // height = 1
+    0x08,                   // bit depth = 8
+    0x02,                   // color type = RGB
+    0x00,                   // compression = deflate
+    0x00,                   // filter = adaptive
+    0x00,                   // interlace = none
+  ];
+  writeChunk(buf, "IHDR", ihdrData);
+
+  // IDAT chunk: zlib-compressed scanline (filter byte 0 + RGB pixel)
+  const rawScanline = Buffer.from([0x00, 0xff, 0x00, 0x00]); // filter=none, R=255, G=0, B=0
+  const compressed = deflateSync(rawScanline);
+  writeChunk(buf, "IDAT", [...compressed]);
+
+  // IEND chunk
+  writeChunk(buf, "IEND", []);
+
+  return new Uint8Array(buf);
+}
+
+function writeChunk(buf: number[], type: string, data: number[]) {
+  const len = data.length;
+  buf.push((len >> 24) & 0xff, (len >> 16) & 0xff, (len >> 8) & 0xff, len & 0xff);
+  for (let i = 0; i < 4; i++) buf.push(type.charCodeAt(i));
+  buf.push(...data);
+  const crcInput = new Uint8Array(4 + data.length);
+  for (let i = 0; i < 4; i++) crcInput[i] = type.charCodeAt(i);
+  crcInput.set(data, 4);
+  const crc = crc32(crcInput);
+  buf.push((crc >> 24) & 0xff, (crc >> 16) & 0xff, (crc >> 8) & 0xff, crc & 0xff);
+}
+
+function crc32(data: Uint8Array): number {
+  let crc = 0xffffffff;
+  for (let i = 0; i < data.length; i++) {
+    crc ^= data[i];
+    for (let j = 0; j < 8; j++) {
+      crc = (crc >>> 1) ^ (crc & 1 ? 0xedb88320 : 0);
+    }
+  }
+  return (crc ^ 0xffffffff) >>> 0;
+}
+
+describe.skipIf(skipReason())("pngcrush command", () => {
+  let vm: AgentOs;
+
+  beforeEach(async () => {
+    vm = await AgentOs.create({ software: [coreutils, pngcrush] });
+  });
+
+  afterEach(async () => {
+    await vm.dispose();
+  });
+
+  it("prints version with -version flag", async () => {
+    const result = await vm.exec("pngcrush -version");
+    expect(result.exitCode).toBe(0);
+    const output = result.stdout + result.stderr;
+    expect(output).toContain("pngcrush 1.8");
+  });
+
+  it("optimizes a PNG file and produces valid output", async () => {
+    const inputPng = createMinimalPng();
+    await vm.writeFile("/tmp/input.png", inputPng);
+
+    const result = await vm.exec("pngcrush -m 1 /tmp/input.png /tmp/output.png");
+    expect(result.exitCode).toBe(0);
+
+    // Verify output file was created and is a valid PNG
+    expect(await vm.exists("/tmp/output.png")).toBe(true);
+    const outputData = await vm.readFile("/tmp/output.png");
+    expect(outputData.length).toBeGreaterThan(0);
+    // PNG signature
+    expect(outputData[0]).toBe(0x89);
+    expect(outputData[1]).toBe(0x50); // P
+    expect(outputData[2]).toBe(0x4e); // N
+    expect(outputData[3]).toBe(0x47); // G
+  });
+
+  it("shows help with -h flag", async () => {
+    const result = await vm.exec("pngcrush -h");
+    const output = result.stdout + result.stderr;
+    expect(output.toLowerCase()).toContain("usage");
+  });
+});