Dev tools · alternatives · 2026
24 alternatives to Unlogged – open-source record and replay for Java
Hello HN! Parth, and Shardul here. We have been building unlogged.io for the last 21 months. We started as a time travel debugger and pivoted to record and replay with assertions, mocking, and code coverage. You can save the replays in the form of a JSON and commit them to your git. Both Parth and I come from an e-commerce/payments background where production bugs meant heavy financial losses. Big billion days/Black Friday sales meant months of code freezes with low productivity. Before committing the code, we wanted to replay production traffic and know the breaking changes right…
Unlogged is an open-source record and replay tool for Java that captures code execution and allows developers to replay production traffic with assertions, mocking, and code coverage analysis. It works through an SDK… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Unlogged – open-source record and replay for Java launched in 2023; newer entries below may have overtaken it.
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Unlogged▲658Open Source tool for mocking, testing & optimising
2024 · plugins.jetbrains.com · its alternatives →
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Automated Penetration Testing for AI-Built Apps
2021 · replay.io · its alternatives →
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Debug web apps faster with record & replay
2023 · requestly.com · its alternatives →
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Embeddable session replay infrastructure on rrweb, the open source standard. Unbranded SDK, ingest on your domain, replay through your API. Free tier included.
2018 · rrweb.io · its alternatives →
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superlog▲497Hey HN, we’re Nico and Arseniy, co-founders of Superlog (https://superlog.sh). We're building a self-installing, self healing observability tool meant not to be opened. It has a wizard that daily sets up proper logging and an agent that investigates errors and opens PRs. Super short demo: https://www.youtube.com/watch?v=xFhU9Mk247M. In our earlier startups, we tried Sentry, Datadog, Grafana, Dash0, and nothing was good enough. Proper telemetry and alerting still requires a ton of manual setup. We struggled with adding good logs, so debugging was tough, especially as…
Jun 2026 · superlog.sh · its alternatives →
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Hi HN, Mike and Warren here! We've been building HyperDX (hyperdx.io). HyperDX allows you to easily search and correlate logs, traces, metrics (alpha), and session replays all in one place. For example, if a user reports a bug “this button doesn't work," an engineer can play back what the user was doing in their browser and trace API calls back to the backend logs for that specific request, all from a single view. Github Repo: https://github.com/hyperdxio/hyperdx Coming from an observability nerd background, with Warren being SRE #1 at his last startup and me previously…
2023 · github.com · its alternatives →
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LogRocket helps you understand problems affecting your users, so that you can get back to building great software.
2016 · logrocket.com · its alternatives →
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Mengutamakan tampilan modern dan kemudahan navigasi, BUSUR4D menghadirkan pengalaman gaming yang terasa lebih sederhana namun tetap menarik. Beragam pilihan permainan dapat dijelajahi dalam satu platform dengan interface responsif dan desain visual yang nyaman, sehingga aktivitas gaming menjadi lebi
2011 · logio.org · its alternatives →
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Hey HN! We’re open-sourcing highlight.io (https://github.com/highlight/highlight), a session replay and error monitoring tool. Highlight.io gives you a high-precision video-like replay of what users are doing when an error or exception occurs in your web app, along with a full-fledged error monitoring experience (similar to bugsnag, rollbar, etc..). The main value prop of highlight.io is that we help you understand the full context surrounding an error and allow you to drill down to the code path that a user invoked (i.e user clicked button X, sent network request Y, and…
2023 · github.com · its alternatives →
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Never lose a vibe coding session. Archive, replay, search.
Jan 2026 · yolog.dev · its alternatives →
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Hi Hacker News! Shahar and Tal from Keep here. A few months ago, we introduced here at HN (https://news.ycombinator.com/item?id=34806482) Keep as an “open source alerting CLI” and got some interesting feedback - mainly around UI, automation, and supporting more tools. We were VERY early back then, and we understood that although the current DX around creating alerts is not great, it's not that critical and developers don’t need another tool just for that. But we did find something else. While talking to developers and devops, we found that a lot of companies use many tools…
2023 · github.com · its alternatives →
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I'd like to invite everyone to try out DontBeEvil.rip, an experimental search engine for developers. tl;dr $ alias rip="curl -G -H 'Accept: text/plain' --url https://dontbeevil.rip/search --data-urlencode " $ rip 'q=Heartbleed bug' DontBeEvil.rip is a year long experiment to see if a small team can build a developer-focused search engine that is self-sustaining on $10 monthly subscriptions. It works by only indexing high-quality resources that are relevant to developers. You won't get useless listicles because we'll never crawl them. Relevant urls are harvested from HN,…
2022 · its alternatives →
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Hey hn! I'm one of the co-founders of highlight.io, an open source monitoring tool. Today we're sharing a ClickHouse-based logging solution we've been working on. We wanted to showcase how we built it and share how you could try it out to give feedback. Since we started working on highlight.io, we've been hyper-focused on "cohesion", or ensuring that when you install your monitoring stack, all of the resources in that stack (user interactions, requests, traces, logs, etc.) are connected in a consumable way. We've written up more about our philosophy on this here [1]. We started building…
2023 · github.com · its alternatives →
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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 →
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Observer▲83Live logs inside your IDE to Debug without context switching
Apr 2026 · mobileagents.io · its alternatives →
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Hi All, this is Shardul here - I am the co-founder of Videobug. https://bug.video We are super excited to share Videobug with you. Videobug records run time code execution so that developers can watch it line by line as frequently as they want, right in their IDE. It takes away the pain of recreating exact conditions that led to a bug and saves developer time in every bug squash. Parth (my co-founder) and I have worked on multiple production grade applications in startups and enterprises. We used Logrocket, Sentry, and Datadog for logging and found ourselves adding more logs after…
2022 · its alternatives →
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Hey guys, I'm building erlog to try and solve problems with logging. While trying to add logs to my application, I couldn't find any lightweight log platform which was easy to set up without adding tons of dependencies to my code, or configuring 10,000 files. ErLog is just a simple go web server which batch inserts json logs into an sqlite3 server. Through tuning sqlite3 and batching inserts, I find I can get around 8k log insertions/sec which is fast enough for small projects. This is just an MVP, and I plan to add more features once I talk to users. If anyone has any problems with…
2023 · github.com · its alternatives →
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This project is inspired by some of the asserts in Unreal engine. Due to reliance on core_intrinsics it is necessary to develop using nightly Rust, but there are stubs in place so a production build will not require nightly. I recently released version 0.2 which includes no_std support and adds optional log message arguments to the ensure macro.
2024 · github.com · its alternatives →
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Gitlogue is a CLI that turns your Git commits into a typing-style replay. It visualizes diffs line by line, shows the file tree, and plays back each edit as if it were typed in real time. Key points • Realistic typing animation • Syntax-highlighted diffs • File-tree view • Replay any commit • Self-contained CLI Demo video is in the README. Repo: https://github.com/unhappychoice/gitlogue
Nov 2025 · github.com · its alternatives →
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For more background and technical details, I wrote this up as well: https://dmitryfrank.com/projects/nerdlog/article
2025 · github.com · its alternatives →
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rrweb 1.0▲120The most popular open-source session replay library
2021 · rrweb.com · its alternatives →
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