ASM6f is a fork of ASM6, primarily targeted at NES/Famicom development.

• Support for some illegal/undocumented opcodes

• FCEUX-compatible .nl output files

• Output of Lua-compatible symbol files

• New IGNORENL and ENDINL directives

• Support for iNES original and 2.0 header insertion

• Output of .cdl files, for use with FCEUX/Mesen

• Output of Mesen-compatible symbol files (both old and new formats)

• Generic +/- labels do not break @local scope

• Support for a: prefix to force absolute addressing for zero-page addresses.

FASM is an assembler that supports x86 and IA-64 Intel architectures. It does multiple passes to optimize machine code. It has macro abilities and focuses on operating system portability.

Cpu_features is a cross-platform C library to retrieve CPU features (such as available instructions) at runtime, and supports these CPU architectures

• x86-64

• AArch64

• ARM

• MIPS

• POWER

• RISC-V

• LoongArch

• S390x

AS is a portable macro cross-assembler targeting a wide range of microprocessors and microcontrollers, including devices from Intel, Motorola, MOS Technology, Hitachi, Fujitsu, NEC, Texas Instruments, Zilog and many other manufacturers.

armips is an assembler with full support for the MIPS R3000, MIPS R4000, Allegrex and RSP instruction sets, partial support for the EmotionEngine instruction set, as well as complete support for the ARM7 and ARM9 instruction sets, both THUMB and ARM mode.

WLA DX is a set of tools to assemble assembly files to object or library files (wla-ARCH) and link them together (wlalink). Supported architectures are:

• z80

• gb (z80-gb)

• 6502

• 65c02

• 6510

• 65816

• 6800

• 6801

• 6809

• 8008

• 8080

• huc6280

• spc700

The Intel X86 Encoder Decoder (XED) is a software library and for encoding and decoding X86 (IA32 and Intel64) instructions. The decoder takes sequences of 1-15 bytes along with machine mode information and produces a data structure describing the opcode, operands, and flags. The encoder takes a similar data structure and produces a sequence of 1 to 15 bytes. Disassembly is essentially a printing pass on the data structure.

The library and development files are under the lib output, with a family of command line utility wrappers in the default output. Each of the cli tools is named like xed*. Documentation for the cli tools is sparse, so this is a case where ``the code is the documentation.''

ACME is a 6502, 6510, 65c02 and 65816 cross assembler that supports global/local/anonymous labels, offset assembly, conditional assembly and looping assembly. It can include other source files as well as binaries while assembling. Calculations can be done in integer or float mode.

RGBDS (Rednex Game Boy Development System) is an assembler/linker package for the Game Boy and Game Boy Color. It consists of:

• rgbasm (assembler)

• rgblink (linker)

• rgbfix (checksum/header fixer)

• rgbgfx (PNG-to-Game Boy graphics converter)

This package provides a Intel 8086 (primarily 16-bit) assembler, a C compiler and a linker. The assembler uses Intel syntax (also Intel order of operands).

Yasm is a complete rewrite of the NASM assembler.

Yasm currently supports the x86 and AMD64 instruction sets, accepts NASM and GAS assembler syntaxes, outputs binary, ELF32, ELF64, 32 and 64-bit Mach-O, RDOFF2, COFF, Win32, and Win64 object formats, and generates source debugging information in STABS, DWARF 2, and CodeView 8 formats.

GNU libjit is a library that provides generic Just-In-Time compiler functionality independent of any particular bytecode, language, or runtime

The SIMDe header-only library provides fast, portable implementations of SIMD intrinsics on hardware which doesn't natively support them, such as calling SSE functions on ARM. There is no performance penalty if the hardware supports the native implementation (e.g., SSE/AVX runs at full speed on x86, NEON on ARM, etc.).

pixell is a library for loading, manipulating and analyzing maps stored in rectangular pixelization. It is mainly intended for use with maps of the sky (e.g. CMB intensity and polarization maps, stacks of 21 cm intensity maps, binned galaxy positions or shear) in cylindrical projection, but its core functionality is more general.

The CPL comprises a set of ISO-C libraries that provide a comprehensive, efficient and robust software toolkit to develop astronomical data-reduction tasks (known as recipes). These data-reduction tasks can then be executed manually by a user, or can be triggered in an automated data-reduction framework (known as pipelines) which are used at ESO to monitor the health status of VLT instruments, for quick-look data processing at the observatory, and the creation of data products available from the ESO archive facility.

CAMB is a cosmology code for calculating cosmological observables, including CMB, lensing, source count and 21cm angular power spectra, matter power spectra, transfer functions and background evolution. The code is in Python, with numerical code implemented in fast modern Fortran.

The concept of the pvextractor package is simple - given a path defined in sky coordinates, and a spectral cube, extract a slice of the cube along that path, and along the spectral axis, producing a position-velocity or position-frequency slice.

SWarp is a program that resamples and co-adds together FITS images using any arbitrary astrometric projection defined in the WCS standard.

Tempo2 is a pulsar timing package, based on the old FORTRAN TEMPO code to address some shortcomings in that code for high precision pulsar timing. See related paper https://ui.adsabs.harvard.edu/abs/2006MNRAS.369..655H/abstract.

PyEsoRex is a command line tool which can serve as a drop-in replacement of EsoRex, which can execute both, existing pipeline recipes implemented using the Common Pipeline Library C API, and recipes implemented using the PyCPL Python API.

European Southern Observatory Data Processing System EDPS is a system to automatically organise data from ESO instruments for pipeline processing and running the pipeline on these data. It is used for quality control at ESO. The current public release is a beta version without a GUI. A GUI is being developed and the system is meant to eventually replace the older EsoReflex environment.

This package provides a replacement for IRAF STSDAS SYNPHOT and ASTROLIB PYSYNPHOT, utilizing Astropy covering instrument specific portions of the old packages for HST.

SkyMaker is a program that simulates astronomical images. It accepts object lists in ASCII generated by the Stuff program to produce realistic astronomical fields. SkyMaker is part of the EFIGI development project.

The FITS "World Coordinate System" (WCS) standard defines keywords and usage that provide for the description of astronomical coordinate systems in a FITS (Flexible Image Transport System) image header.