Dev tools · alternatives · 2026
24 alternatives to Cap'n-rs – Rust implementation of Cloudflare's Cap'n Web protocol
Last week Cloudflare released Cap'n Web [1], a schema-free capability-based RPC protocol. I built capn-rs this week - a Rust implementation with full wire protocol compatibility. Links: GitHub: https://github.com/currentspace/capn-rs Crates: https://crates.io/crates/capnweb-server API docs: https://docs.rs/capnweb-server What's working: Wire compatibility verified via integration tests against TypeScript reference Multi-transport: HTTP batch, WebSocket, WebTransport (HTTP/3) Complete IL (intermediate language) expression evaluator…
Cap'n-rs is a Rust implementation of Cloudflare's Cap'n Web, a schema-free capability-based RPC protocol. It provides full wire protocol compatibility with support for multiple transports including HTTP batch… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.
- 1OS
I've been working on this for some time now, starting with vm2, then deno-core for 2 years, and recently rewrote it on rusty_v8 with Claude's help. OpenWorkers lets you run untrusted JS in V8 isolates on your own infrastructure. Same DX as Cloudflare Workers, no vendor lock-in. What works today: fetch, KV, Postgres bindings, S3/R2, cron scheduling, crypto.subtle. Self-hosting is a single docker-compose file + Postgres. Would love feedback on the architecture and what feature you'd want next.
Jan 2026 · openworkers.com · its alternatives →
- 2
I am happy to announce Stalwart JMAP [1], an open-source JSON Meta Application Protocol server that aims to be scalable, robust and secure. Some of its key features are: - JMAP Core, JMAP Mail and JMAP over WebSocket full compliance. - IMAP4 rev2/1 support via Stalwart IMAP, an imap-to-jmap proxy [2]. - Scalable and fault tolerant: consensus over Raft, node autodiscovery over gossip and read-only replicas. - RocksDB backend with full-text search support in 17 languages. - OAuth 2.0 authorization code and device authorization flows. - Domain Keys Identified Mail (DKIM) message signing. -…
2022 · github.com · its alternatives →
- 3CN
2013 · kentonv.github.com · its alternatives →
- 4
A realtime server for the modern web
2016 · deepstream.io · its alternatives →
- 5
Scalable PaaS (automated Docker+nginx) - aka Heroku on Steroids - caprover/README.md at master · caprover/caprover
2017 · github.com · its alternatives →
- 6
Remote Desktop Protocol for Node.js. Contribute to citronneur/node-rdpjs development by creating an account on GitHub.
2015 · lc.cx · its alternatives →
- 7
Scalable open source pub/sub SDK with support for RPC, JWT authentication and Kubernetes — optimized for async/await
2016 · socketcluster.io · its alternatives →
- 8
Hey HN, I find myself reaching for tools like it-tools.tech or other random sites every now and then during development or debugging. So, I built a toolkit with a sane and simple CLI interface for most of those tools. For the curious and lazy, at the moment, ut has tools for, - Encoding: base64 (encode, decode), url (encode, decode) - Hashing: md5, sha1, sha224, sha256, sha384, sha512 - Data Generation: uuid (v1, v3, v4, v5), token, lorem, random - Text Processing: case (lower, upper, camel, title, constant, header, sentence, snake), pretty-print, diff - Development Tools: calc, json…
2025 · github.com · its alternatives →
- 9
Local-first collaboration SDK for React, Vue, and Svelte. Batteries-included: Rich text, undo/redo, cursors, and presence. - Dancode-188/synckit
Nov 2025 · github.com · its alternatives →
- 10
High performance secure & portable Rust functions in Node.js
2020 · secondstate.io · its alternatives →
- 11
HTTP client/libcurl TUI front end in Rust, with request + key storage - PThorpe92/CuTE
2023 · github.com · its alternatives →
- 12
Offline-first SQL sync with Typescript and Rust cores - syncular/syncular
Aug 2026 · github.com · its alternatives →
- 13
An example GraphQL server written in Rust. Contribute to lucperkins/rust-graphql-juniper-actix-diesel-postgres development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 14
High-performance serverless functions for Rust & WebAssembly
2020 · secondstate.io · its alternatives →
- 15
I have two instances that I'd love to see HN hug to death at https://jonline.io (to which I manually deploy) and https://getj.online (which is deployed to for any commit to main on GitHub). They're both running (side by side, in their own namespaces) on a bare minimum 2GB/50GB DigitalOcean droplet using DOKS (DigitalOcean Kubernetes). The configurations are in: https://github.com/JonLatane/jonline/tree/main/deploys/k8s So far this is a solo endeavor, but with my recent CI integrations and consolidations of things within the…
2023 · github.com · its alternatives →
- 16
Review of the open source cloud gaming platform, cloudretrio.io written in golang and using WebRTC for low latency, interactive game play
2020 · webrtchacks.com · its alternatives →
- 17
Signal protocol implementation for Node.js. Contribute to ForstaLabs/libsignal-node development by creating an account on GitHub.
2017 · github.com · its alternatives →
- 18
Netty-rs is a networking library written in Rust that is meant to help create stateful and p2p application level protocols.
2021 · gitlab.com · its alternatives →
- 19
A Language Server Protocol (LSP) implementation for systemd unit files, providing editing support with syntax highlighting, diagnostics, autocompletion, and documentation made with rust.
2025 · github.com · its alternatives →
- 20
An ultra-fast, single-binary MCP server written in Rust as a lightweight alternative to Node.js/Python. - StamManif/mcp-stama
Aug 2026 · github.com · its alternatives →
- 21
crates.io serves as a central registry for sharing crates, which are packages or libraries written in Rust that you can use to enhance your projects
2022 · crates.io · its alternatives →
- 22
Open source security data lake for threat hunting, detection & response, and cybersecurity analytics at petabyte scale on AWS - matanolabs/matano
2022 · github.com · its alternatives →
- 23
I built this because I wanted to make outbound and accept inbound HTTP/3 and raw QUIC connections from ordinary Node.js code, without building Node from source or putting everything behind a reverse proxy. Repo: https://github.com/currentspace/http3 npm: https://www.npmjs.com/package/@currentspace/http3 It’s a native package around Rust/quiche. It supports both client and server APIs, I'm using it in a couple of projects: creating raw QUIC streams, datagrams, custom ALPN, session behavior, and HTTP/3 client work from Node. I've…
Jun 2026 · github.com · its alternatives →
- 24
crates.io serves as a central registry for sharing crates, which are packages or libraries written in Rust that you can use to enhance your projects
Jul 2026 · crates.io · its alternatives →
Also compare
- OpenWorkers – Self-hosted Cloudflare workers in Rust alternatives
- Distributed JMAP and IMAP Servers in Rust alternatives
- Cap'n Proto, by the ex-maintainer of Protocol Buffers alternatives
- Deepstream.io – open-source real-time server with pub/sub and data sync alternatives
- Easy Webserver for Node.js, Python, PHP, with Free SSL alternatives
- Remote Desktop Protocol in Node.js alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →