5 jobs · 16 apps
Best open source software for nonprofits
For a nonprofit, a self-hosted stack starts with admidio for member management, Pretix for events and WordPress for the website and newsletter.
Nonprofits often run on tight budgets and volunteers. These apps cover member management, events, a website and newsletter, collaboration and bookkeeping, with no per-seat fees.
Updated · data from GitHub, refreshed daily
Top picks
- Rank 1:
admidio
Admidio/admidio
User management system for websites of organizations and groups. The system has a flexible role model so that it’s possible to reflect the structure and permissions of your organization.
Active · last commit Oct 28, 2026
HR & Time TrackingPHPDockerStands out for a published Docker image. admidio has 485 GitHub stars, uses the GPL-2.0 license, ships a Docker image and had 1,570 commits in the last year.
- Rank 2:
Galette
galette/galette
Membership management web application aimed towards non profit organizations.
Active · last commit Oct 27, 2026
Finance & BudgetingPHPStands out for the longest track record (since 2013). Galette has 73 GitHub stars, uses the GPL-3.0 license and had 972 commits in the last year.
- Rank 3:
hitobito
hitobito/hitobito
Manage complex group hierarchies with members, events and a lot more.
Active · last commit Oct 28, 2026
Polls, Surveys & EventsRubyStands out for its Ruby codebase. hitobito has 484 GitHub stars, uses the AGPL-3.0 license and had 1,422 commits in the last year.
At a glance
Open source software for nonprofits compared
Picked by hand for each job from apps whose own description or topics match it, in curated order inside each section, with GitHub data from October 2026; an app appears only once.
| App | Stands out for | License | GitHub stars | Commits (12 mo) | Last commit | Docker image |
|---|---|---|---|---|---|---|
| admidio | a published Docker image | GPL-2.0 | 485 | 1,570 | Oct 28, 2026 | Yes |
| Galette | the longest track record (since 2013) | GPL-3.0 | 73 | 972 | Oct 27, 2026 | No |
| hitobito | its Ruby codebase | AGPL-3.0 | 484 | 1,422 | Oct 28, 2026 | No |
| Pretix | the most commits in the last 12 months (1,578) | AGPL-3.0 | 2,552 | 1,578 | Oct 28, 2026 | Yes |
| Hi.Events | the most GitHub stars | AGPL-3.0 with branding terms (Section 7) | 4,086 | 346 | Oct 27, 2026 | Yes |
| gathio | – | GPL-3.0 | 467 | 104 | Sep 30, 2026 | Yes |
| WordPress | – | GPL-2.0 | 21,509 | 2,760 | Oct 28, 2026 | No |
| Ghost | – | MIT | 55,626 | 6,762 | Oct 28, 2026 | No |
| Listmonk | – | AGPL-3.0 | 24,011 | 463 | Oct 28, 2026 | Yes |
| Nextcloud | – | AGPL-3.0 | 37,321 | 8,046 | Oct 28, 2026 | No |
1 of 5 · 3 picks
Members and groups
- 1
admidio
User management system for websites of organizations and groups. The system has a flexible role model so that it’s possible to reflect the structure and permissions of your organization.
HR & Time TrackingDockerStands out for a published Docker image. admidio has 485 GitHub stars, uses the GPL-2.0 license, ships a Docker image and had 1,570 commits in the last year.
- 2
Galette
Membership management web application aimed towards non profit organizations.
Finance & BudgetingStands out for the longest track record (since 2013). Galette has 73 GitHub stars, uses the GPL-3.0 license and had 972 commits in the last year.
- 3
hitobito
Manage complex group hierarchies with members, events and a lot more.
Polls, Surveys & EventsStands out for its Ruby codebase. hitobito has 484 GitHub stars, uses the AGPL-3.0 license and had 1,422 commits in the last year.
2 of 5 · 3 picks
Events and tickets
- 1
Pretix
Ticket sales platform for events.
E-commerceDockerStands out for the most commits in the last 12 months (1,578). Pretix has 2,552 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 1,578 commits in the last year.
- 2
Hi.Events
Event management and ticketing platform for conferences, concerts, and more. Offering customizable event pages and embeddable ticket widgets.
Booking & SchedulingDockerStands out for the most GitHub stars. Hi.Events has 4,086 GitHub stars, uses the AGPL-3.0 with branding terms (Section 7) license, ships a Docker image and had 346 commits in the last year.
- 3
gathio
Self-destructing, shareable, no-registration event pages.
Polls, Surveys & EventsDockergathio has 467 GitHub stars, uses the GPL-3.0 license, ships a Docker image and had 104 commits in the last year.
3 of 5 · 3 picks
Website and newsletter
- 1
WordPress
World's most-used blogging and CMS engine.
CMSWordPress has 21,509 GitHub stars, uses the GPL-2.0 license and had 2,760 commits in the last year; it replaces WordPress.com and Webflow.
- 2
Ghost
Just a blogging platform.
Blogging PlatformsGhost has 55,626 GitHub stars, uses the MIT license and had 6,762 commits in the last year; it replaces Medium.
- 3
Listmonk
High performance, self-hosted newsletter and mailing list manager with a modern dashboard.
Newsletters & Mailing ListsDockerListmonk has 24,011 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 463 commits in the last year; it replaces Mailchimp and Substack.
4 of 5 · 4 picks
Collaboration and decisions
- 1
NextcloudFeatured
Access and share your files, calendars, contacts, mail and more from any device, on your terms.
File Sync & StorageNextcloud has 37,321 GitHub stars, uses the AGPL-3.0 license and had 8,046 commits in the last year; it replaces Google Drive and Dropbox.
- 2
Mattermost
Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack).
Team ChatDockerMattermost has 39,455 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 2,155 commits in the last year; it replaces Slack.
- 3
Discourse
Advanced forum / community solution based on Ruby and JS.
Social & ForumsDockerDiscourse has 48,023 GitHub stars, uses the GPL-2.0 license, ships a Docker image and had 7,492 commits in the last year; it replaces Reddit.
- 4
Loomio
Collaborative decision-making tool that makes it easy for anyone to participate in decisions which affect them.
Social & ForumsDockerLoomio has 2,622 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 3,117 commits in the last year.
5 of 5 · 3 picks
Bookkeeping
- 1
Bigcapital
Financial accounting and inventory management software for small to medium businesses.
Accounting & InvoicingDockerBigcapital has 3,970 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 1,135 commits in the last year; it replaces QuickBooks and Xero.
- 2
hledger
Plain text double-entry accounting with command-line, terminal and web interfaces, multi-currency support and CSV import.
Accounting & InvoicingDockerhledger has 4,798 GitHub stars, uses the GPL-3.0 license, ships a Docker image and had 2,368 commits in the last year.
- 3
Akaunting
Accounting software designed for small businesses and freelancers.
Source-availableAccounting & InvoicingAkaunting has 10,239 GitHub stars, is source-available under the BSL 1.1 (not an open-source license) and had 595 commits in the last year; it replaces QuickBooks and Xero.
Is there an open source donor management system?
Not in this catalog. Galette describes itself as membership management for non-profit organizations and Admidio as user management for organizations and groups; a general CRM can track donors.
Is admidio free?
Yes. admidio is open-source software released under the GPL-2.0 license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan.
Can I run this stack with Docker?
10 of the 16 apps here publish Docker images, including admidio, Pretix and Hi.Events, so most of the stack can run side by side with Docker Compose on one server. Size the server for the heaviest app and add off-site backups.
How is this list ranked?
Picked by hand for each job from apps whose own description or topics match it, in curated order inside each section, with GitHub data from October 2026; an app appears only once.
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