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    * [scalingo.com](https://scalingo.com/) — Primarily a PaaS but offers a 128MB to 192MB free tier of MySQL, PostgreSQL or MongoDB
    * [SeaTable](https://seatable.io/) — Flexible, Spreadsheet-like Database built by Seafile team. unlimited tables, 2,000 lines, 1-month versioning, up to 25 team members.
    * [skyvia.com](https://skyvia.com/) — Cloud Data Platform, offers free tier and all plans are completely free while in beta
+   * [StackBy](https://stackby.com/) — One tool that brings together flexibility of spreadsheets, power of databases and built-in integrations with your favorite business apps. Free plan includes unlimited users, 10 stacks, 2GB attachment per stack.
    * [remotemysql.com](https://remotemysql.com) — Remote MySQL Database hosting, setup is instant and use phpMyAdmin for administration, free for 100Mb data, free backups, no query limits and 99% uptime.
    * [InfluxDB](https://www.influxdata.com/) — Timeseries database, free up to 3MB/5 minutes writes, 30MB/5 minutes reads and 10,000 cardinalities series
    * [Quickmetrics](https://www.quickmetrics.io/) — Timeseries database with dashboard included, free up to 10,000 events/day and total of 5 metrics.