Google Sheets + MonkeyLearn - Power up your Google Sheets with text analysis
Logic Sheet - The all-in-one data-processing tool for Google Sheets
The Ultimate Google Sheet Toolkit - We put together a curated list of templates, videos, and tutorials that can help you build your analytics expertise.
Data Connector - Data Connector lets you import your data to a Google spreadsheet. Is the only open source API Connector. https://github.com/brentadamson/dataconnector
Grist - Grist makes it easy to transform spreadsheets into a custom database where data is truly actionable.
Causal for Google Sheets - Simulate 100s of scenarios without leaving your spreadsheet