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    * [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.
-   * [TiDB Cloud](https://tidbcloud.com/signup) — TiDB is an open source MySQL compatible distributed HTAP RDBMS. TiDB Cloud provides one-year free Developer Tier, 10 GiB of OLTP storage, and 10 GiB of OLAP Storage.
+   * [TiDB Cloud](https://en.pingcap.com/tidb-cloud/) — TiDB is an open source MySQL compatible distributed HTAP RDBMS. TiDB Cloud provides one-year free Developer Tier, 500 MiB of OLTP storage, and 500 MiB of OLAP Storage.
    * [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.
    * [restdb.io](https://restdb.io/) - a fast and simple NoSQL cloud database service. With restdb.io you get schema, relations, automatic REST API (with MongoDB-like queries) and an efficient multi-user admin UI for working with data. Free plan allows 3 users, 2500 records and 1 API requests per second.