Title: Hi HN! We just released the public alpha version of Mathesar (<a href="https:&#x2F;&#x2F;mathesar.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;mathesar.org&#x2F;</a>, code: <a href="https:&#x2F;&#x2F;github.com&#x2F;centerofci&#x2F;mathesar">https:&#x2F;&#x2F;github.com&#x2F;centerofci&#x2F;mathesar</a>).<p>Mathesar is an open source tool that provides a spreadsheet-like interface to a PostgreSQL database.<p>I was originally inspired by wanting to build something like Dabble DB. I was in awe of their user experience for working with relational data. There’s plenty of “relational spreadsheet” software out there, but I haven’t been able to find anything with a comparable UX since Twitter shut Dabble DB down.<p>We&#x27;re a non-profit project. The core team is based out of a US 501(c)(3).<p>Features:<p>* <i>Built on Postgres</i>: Connect to an existing Postgres database or set one up from scratch.<p>* <i>Utilizes Postgres Features</i>:  Mathesar’s UI uses Postgres features. e.g. &quot;Links&quot; in the UI are foreign keys in the database.<p>* <i>Set up Data Models</i>: Easily create and update Postgres schemas and tables.<p>* <i>Data Entry</i>: Use our spreadsheet-like interface to view, create, update, and delete table records.<p>* <i>Data Explorer</i>: Use our Data Explorer to build queries without knowing anything about SQL or joins.<p>* <i>Schema Migrations</i>: Transfer columns between tables in two clicks in the UI.<p>* <i>Custom Data Types</i>:: Custom data types for emails and URLs (more coming soon), validated at the database level.<p>Links:<p>CODE: <a href="https:&#x2F;&#x2F;github.com&#x2F;centerofci&#x2F;mathesar">https:&#x2F;&#x2F;github.com&#x2F;centerofci&#x2F;mathesar</a><p>LIVE DEMO: <a href="https:&#x2F;&#x2F;demo.mathesar.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;demo.mathesar.org&#x2F;</a><p>DOCS: <a href="https:&#x2F;&#x2F;docs.mathesar.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;docs.mathesar.org&#x2F;</a><p>COMMUNITY: <a href="https:&#x2F;&#x2F;wiki.mathesar.org&#x2F;en&#x2F;community" rel="nofollow">https:&#x2F;&#x2F;wiki.mathesar.org&#x2F;en&#x2F;community</a><p>WEBSITE: https:&#x2F;mathesar.org&#x2F;<p>SPONSOR US: <a href="https:&#x2F;&#x2F;github.com&#x2F;sponsors&#x2F;centerofci">https:&#x2F;&#x2F;github.com&#x2F;sponsors&#x2F;centerofci</a> or <a href="https:&#x2F;&#x2F;opencollective.com&#x2F;mathesar" rel="nofollow">https:&#x2F;&#x2F;opencollective.com&#x2F;mathesar</a>
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