Dev tools · alternatives · 2026
24 alternatives to Reflex
Infrastructure that reacts before you do.
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 2 we have checked on their own sites, 2 of them free or with a free tier.
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Reflex Cloud▲628Build web apps in pure Python + deploy with a single command
2024 · reflex.dev · its alternatives →
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Reflexiofree tier, from $299/mo▲295Behavioral learning that makes AI agents better over time
Sep 2026 · reflexio.ai · its alternatives →
- 5ST
Hello, I'm building SadServers.com, a SaaS where users can test their Linux troubleshooting skills on real Linux servers in a "Capture the Flag" fashion. I hope this is useful, to learn more about the project please see https://github.com/fduran/sadservers
2022 · sadservers.com · its alternatives →
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Proxy 1.0▲718Your AI Assistant that actually gets things done
2025 · convergence.ai · its alternatives →
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Automated Penetration Testing for AI-Built Apps
2021 · replay.io · its alternatives →
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Replay QA▲438Replay QA tells you what is broken before your users do
Jul 2026 · qa.replay.io · its alternatives →
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Hi HN! We’re the team behind Fiddler, and we recently built an Agent Cache feature. It works by capturing an LLM request/response pair and, once caching is enabled, serving subsequent matching calls locally so duplicate requests never hit the provider. It’s meant to reduce three pains that show up together in agent development: token cost, feedback-loop latency, and output non-determinism. We’d love to hear your thoughts.
Aug 2026 · telerik.com · its alternatives →
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Tracciafree tier, from $99/mo▲197AI applications are becoming agents, which has started to take autonomous decisions. There are plenty of tools and platform available to trace, and observe what an agent or llms calls does. They are good in what they do, but tracing and observability isnt enough for AI agents era. We need a solution that can help you observe, evaluate, create run time policies to govern and finally audit the actions of the agent. We built Traccia to solve this problem. The good part, all of these can be achieved by just writing few lines of code. Traccia has an open-sourced sdk that can work with your…
Aug 2026 · traccia.ai · its alternatives →
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Inspector▲70A Real-Time monitoring dashboard in less than one minute
2019 · inspector.dev · its alternatives →
- 13MR
The most common failures for production agents are behavioral: looping, reasoning leakage, user frustration, and more. Using a frontier model like GPT or Sonnet to judge every turn is too expensive and slow to run at scale. To solve this, we built Reflexes: semantic signals from agent traces, served fast and cheap over API. Built on custom kernels and a custom inference engine forked from vLLM. Under the hood, it is a small LLM architected around multi-head inference. Small models need to be trained for specific tasks, but running 50 separate small models on the same input for 50 tasks makes…
Jun 2026 · its alternatives →
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2019 · scarf.sh · its alternatives →
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Your company needs better reflexes
May 2026 · reflexslo.io · its alternatives →
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HookWatch▲112Automated webhook monitoring for indie hackers & small teams
Feb 2026 · hookwatch.dev · its alternatives →
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RootCause helps you track and reproduce javascript errors. You can replay user sessions to avoid extensive troubleshooting and fix application issues in no time.
2018 · therootcause.io · its alternatives →
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This project (Agents Observe) started as an exploration into building automation harnesses around claude code. I needed a way to see exactly what teams of agents were doing in realtime and to filter and search their output. A few interesting learnings from building and using this: - Claude code hooks are blocking - performance degrades rapidly if you have a lot of plugins that use hooks - Hooks provide a lot more useful info than OTEL data - Claude's jsonl files provide the full picture - Lifecycle management of MCP processes started by plugins is a bit kludgy at best The biggest takeaway is…
Apr 2026 · github.com · its alternatives →
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Reflex▲62A fast-paced Quake-esque competitive arena shooter
2015 · store.steampowered.com · 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 →