xa is a high-speed, two-pass portable cross-assembler. It understands mnemonics and generates code for NMOS 6502s (such as 6502A, 6504, 6507, 6510, 7501, 8500, 8501, 8502 ...), CMOS 6502s (65C02 and Rockwell R65C02) and the 65816.

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.

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

NASM, the Netwide Assembler, is an 80x86 and x86-64 assembler designed for portability and modularity. It supports a range of object file formats, including Linux and *BSD a.out, ELF, COFF, Mach-O, Microsoft 16-bit OBJ, Windows32 and Windows64. It will also output plain binary files. Its syntax is designed to be simple and easy to understand, similar to Intel's but less complex. It supports all currently known x86 architectural extensions, and has strong support for macros.

GNU Lightning is a library that generates assembly language code at run-time. Thus, it is useful in creating Just-In-Time compilers. It abstracts over the target CPU by exposing a standardized RISC instruction set to the clients.

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.

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)

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.

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.

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.''

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

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).

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

Blinkenlights is a command-line debugger that focuses on visualizing how software changes memory. It can emulate statically-linked i8086 and x86_64-pc-linux-gnu programs.

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.

The NEON_2_SSE.h file is intended to simplify ARM-to-IA32 porting. It makes the correspondence (or a real porting) of ARM NEON intrinsics as defined in the arm_neon.h header and x86 SSE (up to SSE4.2) intrinsic functions as defined in corresponding x86 compilers headers files.

Python package for making visuals of gravitational wave signals, specifically pulsar timing array signals.

PINT is not TEMPO3 - package providing a Pulsar Timing, written in Python from scratch. Features:

• a robust system to produce high-precision timing results that is completely independent of TEMPO and Tempo2

• a system that is easy to extend and modify due to a good design and the use of a modern programming language, techniques, and libraries

This package provides a Python definition and validation schemata for FITS files.

INDI (Instrument-Neutral Device Interface) is a distributed XML-based control protocol designed to operate astronomical instrumentation. INDI is small, flexible, easy to parse, scalable, and stateless. It supports common DCS functions such as remote control, data acquisition, monitoring, and a lot more.

casa_cube is a python package that provides an interface to data cubes generates by CASA or Gildas. It allows the user to perform simple tasks such plotting given channel maps, moment maps, line profile in various units, correcting for cloud extinction, reconvolving with a beam taper, trimming a cube. The syntax is similar to pymcfost to perform quick and easy comparison with models.

The GNU Astronomy Utilities (Gnuastro) is a suite of programs for the manipulation and analysis of astronomical data.

This package provides a range of colormaps designed for scientific use with Matplotlib. It includes perceptually uniform sequential colormaps such as abre, dusk, kepl, and octarine, as well as monochromatic sequential colormaps like blue, green, and red, and others (algae, pastel, and xray).

WCSTools is a set of software utilities, written in C, which create, display and manipulate the world coordinate system of a FITS or IRAF image, using specific keywords in the image header which relate pixel position within the image to position on the sky. Auxiliary programs search star catalogs and manipulate images.