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ONLYOFFICE
ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets and presentations, forms and PDF, fully compatible with Office Open XML formats: .docx, .xlsx, .pptx and enabling collaborative editing in real time.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
* Docs/Sheets/Slides
- https://www.onlyoffice.com/
I have posted this list before, but it seems to be more and more relevant every day! We don't have to use Google. There are tons of great open source projects available! Here are some of the apps that I self-host and use pretty much daily:
* Drive/Calendar/Photos/Keep:
- https://nextcloud.com/
* Hangouts
- Server - https://matrix.org/
- Client - https://element.io/