diff --git a/README.md b/README.md
index 857df440..5d8dc639 100644
--- a/README.md
+++ b/README.md
@@ -334,12 +334,14 @@ Table of Contents
   * [gocover.io](https://gocover.io/) — Code coverage for any [Go](https://golang.org/) package
   * [goreportcard.com](https://goreportcard.com/) — Code Quality for Go projects, free for Open Source
   * [gtmetrix.com](https://gtmetrix.com/) — Reports and thorough recommendations to optimize websites
+  * [holistic.dev](https://holistic.dev/) - The #1 static code analyzer for Postgresql optimization. Performance, security, and architect database issues automatic detection service
   * [houndci.com](https://houndci.com/) — Comments on GitHub commits about code quality, free for Open Source
   * [Imgbot](https://github.com/marketplace/imgbot) — Imgbot is a friendly robot that optimizes your images and saves you time. Optimized images mean smaller file sizes without sacrificing quality. It's free for open source.
   * [resmush.it](https://resmush.it) — reSmush.it is a FREE API that provides image optimization. reSmush.it has been implemented on the most common CMS such as Wordpress, Drupal or Magento. reSmush.it is the most used image optimization API with more than 7 billions images already treated, and is still Free of charge.
   * [insight.sensiolabs.com](https://insight.sensiolabs.com/) — Code Quality for PHP/Symfony projects, free for Open Source
   * [lgtm.com](https://lgtm.com) — Continuous security analysis for Java, Python, JavaScript, TypeScript, C#, C and C++, free for Open Source
   * [reviewable.io](https://reviewable.io/) — Code review for GitHub repositories, free for public or personal repos
+  * [parsers.dev](https://parsers.dev/) - Abstract syntax tree parsers and intermediate representation compilers as a service
   * [scan.coverity.com](https://scan.coverity.com/) — Static code analysis for Java, C/C++, C# and JavaScript, free for Open Source
   * [scrutinizer-ci.com](https://scrutinizer-ci.com/) — Continuous inspection platform, free for Open Source
   * [shields.io](https://shields.io) — Quality metadata badges for open source projects