The best open source alternative to Quip is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or LibreOffice - Writer. If that doesn't suit you, our users have ranked more than 100 alternatives to Quip and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Quip are CherryTree (Free, Open Source), ONLYOFFICE (Freemium, Open Source), FocusWriter (Free, Open Source) and Trilium Notes (Free, Open Source).
WizNote is a Note software, which is especially designed for Internet users and mobile Internet users. WizNote focuses more on notes of rapid collection, management, reading and sharing. WizNote is smaller, more stable, and more suitable for computers, phones and mobile devices.
Foam is a personal knowledge management and sharing system inspired by Roam Research, built on Visual Studio Code and GitHub. You can use Foam for organising your research, keeping re-discoverable notes, writing long-form content and, optionally, publishing it to the web.
NixNote, formerly Nevernote, is an open source client for Evernote . It is written in Java so it will also run on Windows & OS-X, but the primary focus has been to try and get a usable environment for Linux.
WRITE OFFLINE You can write/edit your notes on your laptop even if you are offline. MULTIPLE DEVICES Boostnote is available for browser, desktop and mobile. SYNTAX HIGHLIGHT Boostnote can highlight code syntax in more than 100 languages.