SwapSQL

What it does

Free online database converter: MySQL → PostgreSQL and PostgreSQL → MySQL. Upload a dump, get back a cleansql file — schema, data, indexes and foreign keys converted through real database engines.

Free online database converter: MySQL → PostgreSQL and PostgreSQL → MySQL. Upload a dump, get back a clean .sql file — schema, data, indexes and foreign keys converted through real database engines.

Two ways to do it, both through real database engines: convert a dump file, or connect both servers and migrate live. Upload a mysqldump / pg_dump file, download converted, import-ready SQL. Conversions need a free account — get a sign-in link by e-mail. No password, and the link brings you straight back here. Your dump is loaded into a real database engine and converted. No dump files — connect the source and the target, SwapSQL moves the data directly. Most online converters rewrite your SQL with text replacement and break on edge cases. Here your dump runs through a real MySQL 8.0 / PostgreSQL 16 server, so quoting, charsets, dates and constraints behave exactly like production. MySQL →…from swapsql.com

• 
  GraphQL for Postgres2015 · github.com · ▲195

  GraphQL for Postgres. Contribute to solidsnack/GraphpostgresQL development by creating an account on GitHub.

• 
  DBngin2018 · dbngin.com · ▲133

  Free all-in-one database version management tool 🛠️

• 
  Apisentris2020 · ▲132

  Convert any databases to APIs

• 
  Xsql – Convert SQL Schemas Across MySQL, Postgres, and SQLiteDec 2025 · github.com · ▲11

  xsql is an open-source Rust CLI + TUI for converting SQL schema DDL between database dialects. Instead of text-based rewrites, it parses CREATE TABLE statements into a small intermediate representation (IR), then emits equivalent SQL for the target dialect. This makes conversions safer, testable, and easier to extend. It supports single-file and recursive folder conversion, includes a no-typing interactive TUI, and recently added an experimental IR v2 with constraint support and JSON output for CI and tooling use. Feedback is very welcome, especially on schema portability and IR design.

• 
  bit.io2021 · ▲130

  All your data in one place

• 
  Dumper2017 · ▲64

  Offsite backup for databases

• 
  /dev/null▲491

  a social network for devs

  Dev tools · 4d ago · dev-null.sh

• 
  Run full iOS 16.5 firmware on Android Devices▲460

  Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

  Dev tools · 21h ago · github.com

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 29d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 24d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 22d ago · talanoa.email

• 
  Fundraisly▲1,537

  AI fundraising agent that finds investors and books meetings

  AI · Jun 2026 · fundraisly.com

• 
  Homebrew 6.0.0▲1,481

  Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!

  Dev tools · Jun 2026 · brew.sh

• 
  Performative-UI – A react component library of design tropes▲1,181

  Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!

  Life & fun · Jun 2026 · vorpus.github.io

• 
  Upstream▲976

  The inbox designed for humans and agents

  AI · Jun 2026 · upstream.do

• 
  Goldfish▲958

  Press Option. It knows your work and replies like you

  AI · Jun 2026 · goldfish.sh

• 
  I made Google Trends for Hacker News by indexing 18 years of comments▲822

  Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.

  Life & fun · Jun 2026 · hackernewstrends.com