Dev tools · alternatives · 2026
24 alternatives to Harp Proxy – open-source API Proxy for reliability and observability
Harp Proxy is an open-source API proxy designed for developers and teams who need to improve reliability and observability of their APIs. It intercepts and manages API traffic to provide visibility into request… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Harp Proxy – open-source API Proxy for reliability and observability launched in 2024; newer entries below may have overtaken it.
- 1M3
2018 · mitmproxy.org · its alternatives →
- 2
Proxy 1.0▲718Your AI Assistant that actually gets things done
2025 · convergence.ai · its alternatives →
- 3IH
2013 · sintaxi.com · its alternatives →
- 4PI
2020 · pixielabs.ai · its alternatives →
- 5HP
2013 · blog.harp.io · its alternatives →
- 6
Baselime▲120Observability & error tracking for cloud applications
2024 · baselime.io · its alternatives →
- 7AP
2017 · debugproxy.com · its alternatives →
- 8
Hey HN! We've developed OpenAPI AutoSpec, a tool for automatically generating OpenAPI specifications from localhost network traffic. It’s designed to simplify the creation of API documentation by just using your website or service, especially useful when you're pressed for time. Documenting endpoints one by one sucks. This project originated from us needing it at our past jobs when building 3rd-party integrations. It acts as a local server proxy that listens to your application’s HTTP traffic and automatically translates this into OpenAPI 3.0 specs, documenting endpoints, requests, and…
2024 · github.com · its alternatives →
- 9
Hey Everyone! I’ve recently been working on an open-source proxy server to help front end applications securely access third party APIs that require confidential API keys without the need to create your own backend. I would love to get some feedback and hear what you think!
2024 · github.com · its alternatives →
- 10
Hey HN! This is Adil, Salman and Jose and and we’re behind archgw [1]. An intelligent proxy server designed as an edge and AI gateway for agents - one that natively know how to handle prompts, not just network traffic. We’ve made several sweeping changes so sharing the project again. A bit of background on why we’ve built this project. Building AI agent demos is easy, but to create something production-ready there is a lot of repeat low-level plumbing work that everyone is doing. You’re applying guardrails to make sure unsafe or off-topic requests don’t get through. You’re clarifying vague…
2025 · github.com · its alternatives →
- 11
Over the past few months, we've been building Prism; a fast, developer-first observability UI that's deeply integrated with our open-source database, Parseable. Prism is designed for engineers who debug distributed systems, sometimes at odd hours, and need answers right now, without having to deal with five different tools. Backstory: We spoke to dozens of observability practitioners in large enterprises. Across the board, we heard two things: (1)The RoI on observability tools is hard to justify. (2)OSS leads to tool sprawl, metrics in Grafana, logs in ELK, traces… somewhere. We wanted a…
2022 · parseable.com · its alternatives →
- 12
Spanly▲77Hi HN, I'm Tim, solo founder of Spanly (https://spanly.com). I spent the last year working on MCP gateways, and debugging them with nothing better than HTTP-level APM was painful. Spanly runs its own MCP server and monitors it with itself, so I've been the first user of everything below. Spanly is observability for MCP servers, the protocol that lets agents like Claude and Cursor call your product's tools. It's a sidecar proxy, so it works with any language and requires zero code changes. Live demo (no signup): https://app.spanly.com/share/demo Sidecar source…
Jun 2026 · spanly.com · its alternatives →
- 13
A solution to securely expose protected resource as APIs
2016 · apigateway.shephertz.com · its alternatives →
- 14
- 15
✦ Gemini ➜ OpenAI API proxy. Serverless! Contribute to PublicAffairs/openai-gemini development by creating an account on GitHub.
2024 · github.com · its alternatives →
- 16
Introducing Braintrust's latest feature: an AI proxy that lets you use open source models like LLaMa 2 and Mistral, as well as all of OpenAI's and Anthropic's models, behind a single interface with caching, security, and API key management built in.
2023 · braintrustdata.com · its alternatives →
- 17
Open-source MITM proxy to intercept, inspect, and mock network traffic. - sauravrao637/oproxy
Jun 2026 · github.com · its alternatives →
- 18
ProxyHub▲10Tunnel, inspect & mock localhost - no backend needed
Apr 2026 · proxyhub.app · its alternatives →
- 19
ServiceRadar is an open-source platform for distributed, secure network management and observability, scaling to 100k+ devices. Born from frustration with complex traditional NMS tools like Zabbix, it bridges legacy (SNMP/syslog) and modern (gNMI, OTLP) protocols for cloud-native environments. We built ServiceRadar to simplify monitoring hybrid telecom networks, evolving it into a Kubernetes-native solution with Helm and Docker support. It uses mTLS with SPIFFE/SPIRE, NATS JetStream for event streaming (90M+ EPS), and SRQL for intuitive queries. Integrated with OpenTelemetry,…
2025 · github.com · its alternatives →
- 20
osapy.com is a premium domain for technology startups, apps, and digital products, with a concise sound and a clear path for a serious buyer to make an offer.
2020 · osapy.com · its alternatives →
- 21
Back in March we first launched Scarf Gateway with support for Docker/OCI containers.
2021 · about.scarf.sh · its alternatives →
- 22
I was surprised to discover there isn't an open-source initiative for a Cloudflare Warp client that fully supports their MASQUE protocol. MASQUE has the potential to revolutionize traditional VPNs, even in self-hosted environments, but there’s been a gap in the ecosystem. I built a proof-of-concept client using the amazing quic-go library that not only integrates their (for some reason) non-rfc compliant MASQUE but also supports multiple modes of operation. This includes full support for any IP traffic and a proxy mode, making it hopefully flexible. I'd love to hear feedback from the…
2025 · github.com · its alternatives →
- 23
If you are tired of using Apache or Nginx to proxy your app and implement validation or limiting you may be interested in this hobbyist project. Thanks for all feedback.
2024 · github.com · its alternatives →
- 24IV
Hello HN, for the past couple of months I've been working on Routify and wanted to share the progress made so far and hopefully get your opinion/feedback on it. Routify is a global serverless API gateway which handles routing, authentication, rate limiting, load balancing, monitoring, transformation etc (with more coming soon). Routify makes it easier to manage and secure public APIs. It's distributed across many regions globally and acts as a proxy between your clients and your services. You can configure it through the interface in a matter of minutes (no code required). There are…
2024 · routify.to · its alternatives →
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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 →