pump.io
pump.io: A self-hosted activity stream for developers who want flexible post types and an API. Ranked #32 of 33 in Twitter Alternatives by our editors (6.0/10); pricing: Open source; best for developers seeking a self-hosted activity stream.
At a glance
- Editor score6.0 / 10
- PricingOpen source
- Best forDevelopers seeking a self-hosted activity stream
- Paid fromNone
- Decentralized networkYes
- Facts checked3 Oct 2026
Where it wins
- Supports text, bookmarks, images, video, audio, events and check-ins
- Includes follower activity streams, following and user-created lists
- Provides a web interface and an ActivityStreams JSON API
Where it doesn't
- Self-hosting requires operating the server yourself
- Web-only interface; no mobile apps are listed
- ActivityPub transition is in progress, not an established primary protocol
Our verdict on pump.io
pump.io is open-source, self-hosted social networking software built around an activity stream: users publish activities for followers to see. It is aimed at developers exploring social software, adding activity-stream features to an app, or running a small social network. People can follow one another and create lists, while the web interface provides a way to publish and view activity without building a separate client.
The product’s breadth of post types is a defining strength for an activity-stream project. Posts can contain text, bookmarks, images, video, audio, events and location check-ins. That range suits projects that need more than short text updates, though the product details do not establish broader social-network capabilities such as public posting. Buyers looking for a focused, extensible stream may value that flexibility; those seeking a verified set of mainstream social features should compare alternatives.
For developers, the ActivityStreams JSON API offers a route to integrate the stream with another application. Project documentation describes a move toward ActivityPub and OAuth 2.0, but that transition is in progress rather than a verified established federation protocol. Deployment is self-hosted, and support channels are community and documentation, so operators should be prepared to manage hosting and rely on those resources. The latest release listed on the project’s GitHub releases page is dated 2023, while current maintenance activity is unclear. pump.io fits technically inclined solo or small-team users willing to assess project activity; it is a less suitable choice for buyers who need managed hosting, mobile apps or assured federation.
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pump.io pricing
pump.io fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | None |
| Decentralized network | Yes |
| Public posts | Not verified |
| Post length limit | Not verified |
| Federation protocol | None |
| Mobile apps | Web only |
| Deployment | Self-hosted |
| Platforms | Web |
| Support | Community, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Open source |
| Website | pumpio.org |
| Facts checked | 3 Oct 2026 |
Alternatives to pump.io
- ThreadsA familiar public microblogging app with Instagram sharing and optional ActivityPub support.9.3
- BlueskyA free social network with public posts, community-built feeds, and moderation controls.9.2
- MastodonA federated social network with chronological timelines and community-led moderation.9.1
See all pump.io alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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