Fenrir-s provides a Kotlin implementation of a Nostr relay, with its source code hosted on GitHub.
The Best bcr-relay Alternatives in 2026
Looking for something like bcr-relay? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 24 are open source.
Bitcredit event traffic is handled by bcr-relay, a specialized Nostr relay implementation written in Rust.
Top picks at a glance
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Fenrir-s | — | Yes | — |
| 2 | Denostr | — | Yes | — |
| 3 | broadcastr | — | Yes | — |
| 4 | blastr | — | Yes | — |
| 5 | Citrine | — | Yes | Android |
| 6 | AlgoRelay | — | Yes | — |
| 7 | 210Maxi | — | Yes | — |
| 8 | BlazeJump | — | Yes | Android |
| 9 | blossy | — | Yes | — |
| 10 | Aegis | — | Yes | Android, iOS, Linux |
All bcr-relay alternatives
Denostr implements a Rust-based, cloud-native Nostr relay derived from nostr-rs-relay.
broadcastr transmits Nostr events from one relay to other relays as a stateless alternative to blastr.
blastr publishes Nostr events to multiple relays through a proxy relay running on Cloudflare Workers.
Citrine runs a Nostr relay on Android that lets compatible clients send and receive events through the device.
AlgoRelay lets relay operators provide ranked or filtered event feeds through an algorithmic Nostr relay.
210Maxi relays Nostr events only when their content is 210 characters or fewer.
BlazeJump provides core protocol interactions through a minimal Nostr client written in C#.
Blossy supports building customized Blossom servers through a framework written for the media protocol.
Aegis signs Nostr events through a simple cross-platform signer, allowing clients to request signing without handling private keys directly.
bark signs Nostr events through a NIP-07 interface backed by NIP-46 remote signing.
atomstr converts RSS and Atom feeds into Nostr events by fetching feed content and publishing it through the protocol.
cfrelay runs a Nostr relay on Cloudflare Workers and supports the basic NIP-01 protocol.
Nostr badge events of kind 8 can be created and issued with Badger, a client for the protocol.
DDSR lists Nostr relays configured for different domain-specific purposes.
Coracle supports browsing multiple Nostr relays, filtering posts, and creating custom feeds.
bloom combines a self-hosted media server with a Nostr relay for decentralized media sharing.
Bucket provides a lightweight testing relay for Nostr client development and protocol experiments.
Bostr manages Nostr relay connections as a relay bouncer, with ongoing development focused on bostr2.
relay-connect provides a user interface for connecting to BitMacro relays, with a related web interface and project links.
better-auth-nostr adds NIP-98 Nostr authentication to Better Auth through a plugin for login flows.
algia-web renders Nostr pages through server-side rendering backed by the algia command line tool.
amberflutter wraps the Amber Nostr signer in Flutter, enabling Android apps to connect to the signing service.
Dart NDK provides a Dart development kit with high-level use cases for building Nostr applications.
Alternatives to similar tools
What is the best alternative to bcr-relay?
Are there open-source alternatives to bcr-relay?
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