Alternatives
Products that do what UUIDv7 does
Time-ordered UUIDs, decoded and done right (UUIDv7 RFC 9562)
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I use UUIDv7's in multiple places as an efficient index in Postgres. When querying this data I usually need to be able to query between a time range so wanted to have a quick way to generate a reference ID that I could use in a BETWEEN query. All the simple, fast tools I found online were focused on generating bulk ids or converting from an ID to a timestamp rather than the other way around, so I wrote one myself. For example if I wanted to find everything that happened between 2025-03-11T13:00:00.000Z and 2025-03-11T13:59:59.999Z I can type in the timestamp, select earliest (or latest) to…
2025 · uuidv7.org
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Generate UUID v1, v4 & v7 instantly - free & browser-based
May 2026 · uuid-generator-bay.vercel.app
- 41B
2021 · github.com
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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…
Oct 2025 · github.com
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2015 · uuidgenerator.org
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Free UUID Generator – Generate Random UUID v4 Instantly
24d ago · technofirstonline.com
- 12UJ
Hey folks! I know CSV parsers (especially in JS) aren't terribly exciting and someone writes a "better" one every week. I'm in the middle of my parental leave, and this was a project that came out of me looking for the fastest/smallest CSV parser. It all started so innocently, and then turned into a benchmark-validation-athon; the library itself took ~2 weeks to write, but the performance comparisons took another ~4 weeks (on and off). The benchmarks were a huge effort, but I think they are the most thorough to date, both in breadth and in depth, so hopefully you find them useful:…
2023 · github.com
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2015 · github.com
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2020 · github.com
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2019 · github.com
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2020 · github.com
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A cryptographically random identifier
May 2026 · uuidly.binaygupta.in
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2021 · github.com
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Serialization framework with some interesting numbers: 10-20x faster on nested objects than json/protobuf. Technical approach: compile-time codegen (no reflection), compact binary protocol with meta-packing, little-endian layout optimized for modern CPUs. Unique features that other fast serializers don't have: - Cross-language without IDL files (Rust ↔ Python/Java/Go) - Trait object serialization (Box) - Automatic circular reference handling - Schema evolution without coordination Happy to discuss design trade-offs. Benchmarks:…
Oct 2025 · fory.apache.org
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2018 · github.com
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Need a fast, easy-to-use, and memorable UUID/Guid generator? Built with the power and elegance of F#! https://uuid.now is here! One-click copy Zero UUID support Browser-based (Crypto API) Fully open source Explore the source code here: https://github.com/OnurGumus/uuid.now
2024 · uuid.now
- 22IV
Hey HN! I've been building random tools whenever I needed them over the past few months, and now I have 177 of them. Started because I was tired of sketchy converter sites with 10 ads, so I just... made my own. Some highlights for the dev crowd: Developer tools: - UUID Generator (v1/v4/v7, bulk generation): https://calcbin.com/tools/uuid-generator - JWT Generator & Decoder: https://calcbin.com/tools/jwt-generator - JSON Formatter/Validator: https://calcbin.com/tools/json-formatter - Cron Expression Generator (with…
Feb 2026 · calcbin.com
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2024 · github.com
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