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simdjson

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JSON is everywhere on the Internet. Servers spend a lot of time parsing it. We need a fresh approach. The simdjson library uses commonly available SIMD instructions and microparallel algorithms to parse JSON 2.5x faster than anything else out there.

License model

  • Free • Open Source

Country of Origin

  • CA flagCanada

Platforms

  • Self-Hosted
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Features

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  1.  JSON Parser

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simdjson information

  • Developed by

    CA flagDaniel Lemire

  • Licensing

    Open Source (Apache-2.0) and Free product.

  • Written in

  • Alternatives

    2 alternatives listed

  • Supported Languages

    • English

GitHub repository

  •  20,655 Stars
  •  1,082 Forks
  •  138 Open Issues
  •   Updated Jun 4, 2025 
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simdjson was added to AlternativeTo by Paul on Aug 7, 2020 and this page was last updated Aug 7, 2020.
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What is simdjson?

JSON is everywhere on the Internet. Servers spend a lot of time parsing it. We need a fresh approach. The simdjson library uses commonly available SIMD instructions and microparallel algorithms to parse JSON 2.5x faster than anything else out there.

  • Fast: Over 2.5x faster than other production-grade JSON parsers.
  • Easy: First-class, easy to use API.
  • Strict: Full JSON and UTF-8 validation, lossless parsing. Performance with no compromises.
  • Automatic: Selects a CPU-tailored parser at runtime. No configuration needed.
  • Reliable: From memory allocation to error handling, simdjson's design avoids surprises.

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