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performance
Performance plugin from the WordPress Performance Group, which is a collection of standalone performance modules. (by WordPress)
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
The WordPress / Automattic performance team has a Performance Lab Plugin with a module to convert uploaded JPEGs to WEBP automatically. https://wordpress.org/plugins/performance-lab/
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.