Best Open Source Linux Billing Software 2026

Billing Software for Linux

Billing Linux Membership Management Clear Filters

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

Our Free Plans just got better! | Auth0
With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.

Try free now
Automate contact and company data extraction
Build lead generation pipelines that pull emails, phone numbers, and company details from directories, maps, social platforms. Full API access.

Generate leads at scale without building or maintaining scrapers. Use 10,000+ ready-made tools that handle authentication, pagination, and anti-bot protection. Pull data from business directories, social profiles, and public sources, then export to your CRM or database via API. Schedule recurring extractions, enrich existing datasets, and integrate with your workflows.

Explore Apify Store
1

Cyber Manager

Cyber Manager (v1.0) is a "Free for All" open source web application designed and developed for cyber cafe managers built with an aim to help them in managing their cyber cafe in a much efficient and better and smoother way.

Downloads: 0 This Week

Last Update: 2025-11-01
See Project
2

Donation Management

A PHP based donation management system for NGO. Useful to manage small member based organization with recurring donation, receipt printing and occasional ad-hoc donation for members and non-members.

1 Review

Downloads: 0 This Week

Last Update: 2014-07-11
See Project
3

AthenaCentral

Membership management software

AthenaCentral is used since 2006 by health club chains, fitness centers, gyms and many membership organizations. It offers multilingual, multi-country and multi-center functionality. Its flexibility and power enables you to quickly adapt to environmental as well as organizational changes. The system includes components for integrating additional technologies such as access control (barcode, RFID, fingerprints, ...). It is fully compatible iso20022 (financial information transactions) and iso18004 (QR Code). COVID : Modify all your contracts including complicated situations (Bonus Time and/or Time Stop) at once Developed by Josh Cimers - Prototypes # club management club member administration, membership management, gym management

1 Review

Downloads: 8 This Week

Last Update: 2022-02-11
See Project