Fenrir-s provides a Kotlin implementation of a Nostr relay, with its source code hosted on GitHub.
connect4
vsbloom
connect4 vs bloom
How do connect4 and bloom compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | connect4 | bloom |
|---|---|---|
| What it is | connect4 supports multiplayer Connect Four over Nostr and can be hosted by players themselves. | bloom combines a self-hosted media server with a Nostr relay for decentralized media sharing. |
| Website | ||
| Type | Open-source project | Open-source project |
| Topic | ||
| Pricing | Not confirmed | Not confirmed |
| Platforms | Not recorded | Android, iOS, Linux, macOS, Windows |
| Open source | Yes | Yes |
| Language | English | English |
| Alternatives |
Other options to consider
Sites similar to both connect4 and bloom.
Open source
24 alternativesThis comparison list tracks which Nostr clients support different protocol features and NIPs.
Open source
24 alternativesalgia-web renders Nostr pages through server-side rendering backed by the algia command line tool.
Open source
24 alternativesbray provides a trust-aware Nostr MCP server with verification, proximity, and access controls.
Open source
24 alternativesEvento provides an open-source Nostr client with a built-in self-custodial Bitcoin Lightning wallet.
Open source
24 alternativesAegis signs Nostr events through a simple cross-platform signer, allowing clients to request signing without handling private keys directly.
Open source
24 alternatives






