This is similar to blackarch-decompiler, and there will probably be a lot of programs that fall into both, however these packages produce assembly output rather than the raw source code.

Tool count: 20

BlackArch disassembler
Name Version Description Homepage
abcd 4.2738809 ActionScript ByteCode Disassembler.
binnavi 6.1.0 A binary analysis IDE that allows to inspect, navigate, edit and annotate control flow graphs and call graphs of disassembled code.
binwalk 2.3.4 Tool for searching a given binary image for embedded files
chiasm-shell 33.e20ed9f Python-based interactive assembler/disassembler CLI, powered byKeystone/Capstone.
distorm 3.5.2.b Powerful disassembler library for x86/AMD64
exe2hex 1.5.1.r6.ge563b35 Inline file transfer using in-built Windows tools (DEBUG.exe or PowerShell).
libdisasm 0.23 A disassembler library.
lief 0.13.2 Library to Instrument Executable Formats.
marc4dasm 6.f11860f This python-based tool is a disassembler for the Atmel MARC4 (a 4 bit Harvard micro).
plasma-disasm 922.ec7df9b An interactive disassembler for x86/ARM/MIPS. It can generates indented pseudo-code with colored syntax.
python-pcodedmp 1.2.6 A VBA p-code disassembler.
python-pwntools 4.12.0 CTF framework and exploit development library
python2-capstone 4.0.1 A disassembly framework with the target of becoming the ultimate disasm engine for binary analysis and reversing in the security community.
python2-pcodedmp 1.2.6 A VBA p-code disassembler.
radare2-unicorn 851.167e5c4 Unicorn Emulator Plugin for radare2.
redasm 1667.5ab6be9 Interactive, multiarchitecture disassembler written in C++ using Qt5 as UI Framework.
scratchabit 571.e52ba4b Easily retargetable and hackable interactive disassembler with IDAPython-compatible plugin API.
smali 2.5.2 Assembler/disassembler for Android's dex format
unstrip 13.05e00c2 ELF Unstrip Tool.
viper 2099.fdd7855 A Binary analysis framework.