Killed by open sourced software. Companies that have had a significant market share stolen from open sourced alternatives.

This page summarizes the projects mentioned and recommended in the original post on /r/opensource

InfluxDB – Built for High-Performance Time Series Workloads
InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com
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SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives
www.saashub.com
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  1. litestar

    Production-ready, Light, Flexible and Extensible ASGI API framework | Effortlessly Build Performant APIs

    Litestar - Litestar has been picking up quite a lot of steam in the past year since the lead maintainer of their largest OS competitor (fastapi) seems to be unable to prioritize listening to community feedback / concerns people have over the project. You literally can't mention fastapi on this site without people bringing up litestar.

  2. InfluxDB

    InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

    InfluxDB logo
  3. scalar

    Scalar is an open-source API platform:                                       🌐 Modern Rest API Client                                        📖 Beautiful API References                                        ✨ 1st-Class OpenAPI/Swagger Support

    Scalar - alternative to redoc that has been frantically building out the premium features that redoc's parent company charges absorbent prices for.

  4. obfuscar

    Open source obfuscation tool for .NET assemblies

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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