Best Open Source System Software 2026

System Software

System OpenServer Linux Software Development Clear Filters

Browse free open source System software and projects for OpenServer and Linux below. Use the toggles on the left to filter open source System software by OS, license, language, programming language, and project status.

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1

Heirloom Project

The Heirloom Project provides standard Unix utilities.

Downloads: 4,983 This Week

Last Update: 2013-04-11
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2

empty

Run applications under pseudo-terminal (PTY) sessions

empty - run applications under pseudo-terminal (PTY) sessions to dialogue with interactive programs. Replace TCL/Expect with a simple tool and use your favorite shell (sh, bash, csh, tcsh, ksh, zsh, etc)

3 Reviews

Downloads: 277 This Week

Last Update: 2025-08-18
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3

z390 Portable Mainframe Assembler

z390 Portable Mainframe Assembler and Emulator

z390 Portable Mainframe Assembler and Emulator

6 Reviews

Downloads: 6 This Week

Last Update: 2014-06-07
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4

cmdok

Command validation tool

cmdok checks that specified commands are OK. If command is OK than it exists in PATH and can be run. It is a simple, small and portable Bash script. It is useful in software packages that want to check that some commands exist before trying to run them. See wiki for more information and examples.

Downloads: 0 This Week

Last Update: 2018-10-25
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Stop Storing Third-Party Tokens in Your Database
Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.

Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.

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