Life & fun · alternatives · 2026

24 alternatives to Sidenotes

Annotate the web.

Sidenotes is a web annotation tool that allows users to add notes and comments directly to web pages. It launched in 2014 and lets people highlight and annotate content as they browse. The service is designed for… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Sidenotes launched in 2014; newer entries below may have overtaken it.

1
Page Notes Sidebar▲107
Capture thoughts where they happen
2025 · chromewebstore.google.com · its alternatives →
2
Sidenote▲268
Comment and live chat on any page of the internet
2024 · sidenoteapp.com · its alternatives →
3
SideNotes▲311
A beautiful note taking app with superpowers. It shows and hides on the side of your monitor to manage your notes distraction-free. Keep your notes organised, personalised and always at your fingertips. Markdown, tasks, pictures, colors, folders included.
2025 · apptorium.com · its alternatives →
4
Sidenote▲97
Timestamped notes on YouTube videos
2020 · sidenote.me · its alternatives →
5
SiteNotes - Ultimate Browsing Companion▲13
Take and save notes for any website in a beautiful sidebar.
2024 · chromewebstore.google.com · its alternatives →
6
Sidenote AI▲228
AI copilot for meeting follow-up
2023 · sidenote.ai · its alternatives →
7
MetaNote▲77
Add notes to any page on the web and share
2022 · its alternatives →
8
Genius Beta▲389
Annotate the Internet
2015 · genius.com · its alternatives →
9
DoneNote▲253
Leave notes straight on the web page with your entire team
2023 · donenote.com · its alternatives →
10
SideNotes for iPhone and iPad▲110
Your quick notes with you
2022 · apptorium.com · its alternatives →
11
Supernotes▲421
The collaborative note-taking app
2020 · supernotes.app · its alternatives →
12
Evernote Web - Oct 2014▲435
Dictate notes, perform searches, and see recent content.
2014 · evernote.com · its alternatives →
13
Side Notepad▲165
Write notes without leaving your work
2025 · chromewebstore.google.com · its alternatives →
14
Notelet▲348
Create a website or blog with Notion.
2020 · notelet.so · its alternatives →
15
NotesAlong▲75
Highlight, organize, and share information effectively
2020 · its alternatives →
16
NoteStash▲13
Highlight and annotate any webpage text content
2025 · chromewebstore.google.com · its alternatives →
17
Marginotes, quick and elegant side notes for your paragraphs▲111
Quick, cool margin notes with jQuery. Contribute to fdansv/marginotes development by creating an account on GitHub.
2016 · github.com · its alternatives →
18
Context Note▲114
take notes on the web with their context
2021 · github.com · its alternatives →
19
Annotary - Highlight Web Pages, Share Your Notes▲15
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2012 · annotary.com · its alternatives →
20
QuickNotes▲6
This is a minimalist, powerful local note-taking tool.
Jul 2026 · its alternatives →
21
Gnotes▲109
You focus on learning, we'll take the notes.
2019 · chromewebstore.google.com · its alternatives →
22
🚀 Quick Notes▲3
A simple tool for reading and annotating PDFs 📝
2018 · quicknotes.app · its alternatives →
23
YouNote▲104
Seamless note-taking fo YouTube videos
2021 · its alternatives →
24
Side Note▲2
Instant Note Taking on the Browser
2023 · chromewebstore.google.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →