<p>PostgreSQL logo from <a href="https://www.postgresql.jp/npo/logo/?searchterm=logo">the PostgreSQL JP site</a>.</p>
<p>Eleventy logo from <a href="https://11ty.io">the Eleventy site</a>.</p>
<p>AppEngine logo from <a href="https://favpng.com/png_view/engine-google-app-engine-google-cloud-platform-google-compute-engine-cloud-computing-png/NgfHuMDX">FavPNG</a>.</p>
<p>MongoDB logo from <a href="https://favpng.com/png_view/bay-leaves-mongodb-inc-computer-software-business-software-developer-png/sGC75bKw">FavPNG</a>.</p>
<p>Git logo from <a href="https://git-scm.com/downloads/logos">the Git logo page</a>.</p>
<p>Mercurial logo from <a href="https://www.selenic.com/hg-logo/">the Mercurial logo page</a>.</p>