cfrelay runs a Nostr relay on Cloudflare Workers and supports the basic NIP-01 protocol.
Open source
24 alternativesCitrine
Citrine runs a Nostr relay on Android that lets compatible clients send and receive events through the device.
About Citrine
Citrine is a Nostr relay that runs on Android. Compatible Nostr clients can send and receive events through the app on the device.
It supports importing and exporting the relay database, including export of only the user's own events, controls for relay port, user, start and stop, and broadcasting events after coming back online.
Key features
- Runs a Nostr relay on an Android phone
- Exchanges events with compatible Nostr clients
- Imports and exports the relay database
- Exports only events from your account
- Controls relay port, user, start, and stop
- Rebroadcasts events after coming back online
Best for: Android users who want to run their own Nostr relay on their phone.
Good for
- Open source under MIT license
- Runs the relay on the Android device
- Supports database import, export, and account-only export
Watch out for
- Android only; no other platforms stated
Citrine at a glance
- Category
- Social & Communities › Nostr
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Android
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Citrine alternatives
Tools and sites you could use instead, ranked by how closely they match.
ehagaki provides a post-only Nostr client that compresses media on the device before upload.
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Aegis signs Nostr events through a simple cross-platform signer, allowing clients to request signing without handling private keys directly.
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Bitcredit event traffic is handled by bcr-relay, a specialized Nostr relay implementation written in Rust.
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broadcastr transmits Nostr events from one relay to other relays as a stateless alternative to blastr.
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blastr publishes Nostr events to multiple relays through a proxy relay running on Cloudflare Workers.
Open source
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