Alternatives
Products that do what SMTP Server in Rust with DMARC, Dane, MTA-STS, Sieve, OTEL Support does
I am happy to announce Stalwart SMTP [1], a modern SMTP server developed in Rust with a focus on security, speed, and extensive configurability. It features built-in DMARC, DKIM, SPF and ARC support for message authentication, strong transport security through DANE, MTA-STS and SMTP TLS reporting, and offers great flexibility and customization thanks to its dynamic configuration rules and native support for Sieve scripts. The project has been recently awarded a grant from NLNet and the European Commission's Next Generation Internet program to develop a mail server in Rust. The next step in…
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An ultra-fast, single-binary MCP server written in Rust as a lightweight alternative to Node.js/Python. - StamManif/mcp-stama
24d ago · github.com
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I built a DNS resolver that lets me use https://frontend.numa instead of localhost:5173 — auto-generated TLS certs, WebSocket passthrough, path routing. No mkcert, no nginx, no /etc/hosts.
Apr 2026 · github.com
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2020 · github.com
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PicoMQ is a Rust server for Durable Streams, built on Object Store. Cheap, URL-addressable, granular streams (create/append/read/long-poll/SSE), with Pico Protocol or Durable Streams Protocol as the facade. S3Stream is the stream storage primitive, used in AutoMQ, shipped as a Rust library. Coordination is a command log in Postgres.
13d ago · picomq.com
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2019 · github.com
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2017 · github.com
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Introducing Posthorn, a self hosted email gateway. One docker container (or Go binary) between every self hosted app on your VPS and your transactional email provider. Set up Posthorn once, point your apps to it, done. I was trying to deploy Ghost on a DigitalOcean droplet and found that DO and many different VPS services have started to block the default SMTP ports to try to combat the various types of abuse they get. To actually configure my app, I had to hack together a Postfix relay. In another project, I had a static site which had a contact form, but my free Formspree account was…
May 2026 · github.com
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I built rapid-rs to eliminate the hours of boilerplate when starting a new Rust web service. One command gets you: - Auto-configured DB, logging, CORS - OpenAPI/Swagger UI at /docs - Request validation - Production-ready observability Built on Axum. Early benchmarks show ~50K req/s with 10-20MB RAM. This is v0.1 - feedback welcome! Crates: https://crates.io/crates/rapid-rs
Nov 2025 · crates.io
- 11SS
Raw performance (the lack of) is always a contentious point for JavaScript, especially in our post-Moore era of computing. Node.js gets around this issue through extensive of use of native libraries and modules written in C, including the V8 JS engine itself. But as application developers, how do YOU create high performance functions? Write in C and run as a NAPI module? Write in Rust and run as a V8 wasm? Well, there is another (better and faster) way now! The SSVM is a fully featured WebAssembly VM that is optimized for server-side applications.…
2020
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Hi HN! This Christmas I made `tysm`, a rust crates which simplifies using ChatGPT with Structured Outputs. Essentially you just tell it the rust type you want the output to conform to, and it handles creating the JSON Schema, passing it to ChatGPT's chat-completions API, and deserializing the response. Structured Outputs are very useful because they guarantee that the response will conform to whatever type you expect. I'm already finding my crate very useful since I love using Structured Outputs but I hate writing JSON Schemas myself. Technical details for rust heads: To generate the JSON…
2024 · github.com
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2021 · gitlab.com
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2017 · github.com
- 15IB
Link: https://docs.trysoma.ai/ For the past ~9 months I’ve been building Soma, an open-source AI agent & workflow runtime written in Rust, with a TypeScript SDK (Python coming soon). It’s not a framework; it’s meant to sit underneath whatever agent/tooling code you already write (Vercel AI SDK, LangChain, custom code, etc.). It provides features around your framework + a better DX for building agents. I’ve tried to take a Next.JS model: open-source, good DX, self-deployable. I originally set out to build a vertical back-office/operations product for SMEs. I needed a…
Dec 2025 · docs.trysoma.ai
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Hey everyone! I've been working on something called Afterburner: a fast, embeddable JS/TS runtime written in Rust, with a capability sandbox baked right in. Scripts run locked down by default: no network, no filesystem, no environment variables. You explicitly grant whatever access a script actually needs, and every call gets hard caps on CPU, memory, and time. The goal isn't to replace your existing stack. It's to fit cleanly into it: Embed a JS/TS engine in your Rust app with a single crate. Run user scripts, plugins, business rules, or edge logic, each call fully sandboxed. Wrap…
Jun 2026 · github.com
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LeakSignal project uses WASM in Envoy server to check for sensitive data leaks
2022 · github.com
- 18OA
Hi HN, I host my own mail infrastructure and don't rely on third-party tools to send my mails. But in a microservice architecture, managing all the SMTP configs quickly becomes tiresome. After a while I'd always have my credentials and settings scattered in application-properties, bash scripts and environment files. So I've build Brieferl, an app where you can add your SMTP servers and send emails through a single API with a simple JSON payload. You also get logs of when/where emails were sent and HTML previews of messages. I am interested in what you guys think about this. You can…
Sep 2025 · brieferl.com
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2020 · secondstate.io
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- 22RS
Jun 2026 · github.com
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Hi everyone, I was recently much frustrated with speed of k9s that I use regularly and decided to create a rust alternative that is much faster. Architecture comes from me, and (shocking) Fable coded most of the things. My whole company switched to it and experience has been great - much faster, integrated tightly with Flux/helm/externalsecrets and develops much faster. I know that there is an overall sentiment on HN with using LLMs, so YMMV. In terms of speed, you can check the benchmarks:…
18d ago · github.com
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New Graphul version v0.5.0 Enjoy building webservices with Rust :)
2023 · graphul-rs.github.io
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