What makes an AI tool extension worth installing
The Chrome Web Store has hundreds of AI-adjacent extensions. Most of them add a chat interface to a sidebar, or wrap an existing API with a slightly different UI. That's not what this list is about.
The extensions worth installing do one of three things: they save your AI output somewhere permanent, they bring context into the AI that wasn't there before, or they remove a friction point that was costing you time every single day. Everything else is noise.
1. ChatSpry — save AI conversations to Google Drive
What it does: Adds a one-click save button to Claude, ChatGPT, and Gemini. Saves the full conversation to Google Drive as a Markdown file, filed automatically under the right project folder. Code blocks are extracted as separate files with correct extensions. Every saved conversation is immediately searchable in Drive.
Why it matters: Every valuable conversation you have with an AI is sitting in a browser tab, one closed tab away from being hard to find. ChatSpry turns your AI work into a permanent, searchable library in storage you own. The setup takes 5 minutes once — after that, saving is one click.
Best for: Anyone who uses Claude, ChatGPT, or Gemini for real work and wants a permanent record of their best sessions.
Pricing: Free for 10 saves/month. Pro is $5.99/month for unlimited saves.
2. Superpower for ChatGPT
What it does: Adds features to the ChatGPT interface that OpenAI hasn't built yet — conversation folders, custom prompts, message editing, and a prompt history. It makes ChatGPT's native interface significantly more usable for power users.
Why it matters: ChatGPT's built-in interface is functional but thin. Superpower fills in the gaps: better organization within the ChatGPT sidebar, faster access to prompts you use repeatedly, and the ability to organize conversations into folders without leaving the ChatGPT interface.
Best for: Heavy ChatGPT users who want better organization without leaving the ChatGPT UI.
Pricing: Free tier available. Pro features on paid plan.
3. Merlin — AI on any webpage
What it does: Puts an AI assistant one keyboard shortcut away on any webpage. Select text, hit the shortcut, and get a response from Claude or GPT-4 without switching tabs.
Why it matters: The friction of switching to a separate AI tab is small per instance but significant across a workday. Merlin collapses the distance between "I need to understand this" and getting an answer. Works on Gmail, Google Docs, Notion, news articles — anywhere you're reading.
Best for: Research-heavy workflows where you're constantly moving between reading and asking questions.
Pricing: Free tier with usage limits. Paid plans for higher volume.
4. AIPRM for ChatGPT
What it does: A library of community-built prompt templates that appear directly in the ChatGPT interface. Browse by category, one-click to load a prompt, fill in your specifics.
Why it matters: If you use ChatGPT for similar tasks repeatedly — SEO writing, code review, email drafts — building a prompt from scratch every time is unnecessary overhead. AIPRM gives you a starting point that's been refined by others doing the same task.
Best for: Content creators, marketers, and developers who repeat the same AI tasks and want a faster starting point.
Pricing: Free tier available. Premium plans for more templates and features.
5. Monica — multi-model AI assistant
What it does: A sidebar AI assistant that lets you switch between Claude, GPT-4, Gemini, and other models from a single interface. Includes page summarization, translation, writing assistance, and a chat interface that persists across tabs.
Why it matters: Different models are better at different tasks. Claude is strong on analysis and long documents. GPT-4 is fast for code. Being able to route a question to the right model without switching accounts or tabs saves real time.
Best for: Power users who work across multiple AI models and want a unified interface.
Pricing: Free tier with usage limits. Pro plans for heavier use.
6. Glasp — highlight and save AI responses
What it does: A web highlighter that lets you save specific passages from any webpage — including AI responses — to a personal knowledge library. Highlights sync across devices and can be exported to Notion or Obsidian.
Why it matters: Sometimes you don't want to save the whole conversation — just the one paragraph that was actually useful. Glasp lets you highlight exactly that, tag it, and have it surface in your knowledge base when you need it again.
Best for: Researchers and knowledge workers who want to capture specific insights rather than whole conversations.
Pricing: Free. Glasp is a social platform — highlights are public by default, so check privacy settings if that's a concern.
7. Forest / StayFocusd — focus during deep AI work
What it does: Blocks distracting websites for a set period. Forest grows a virtual tree during your focus session. StayFocusd gives you a daily time budget for specific sites.
Why it matters: The value of an AI session compounds with depth. A 20-minute interrupted session produces a fraction of what a 90-minute focused session produces. The best AI work happens when you go deep on a problem rather than dipping in between distractions.
Best for: Anyone who finds themselves opening Twitter in the middle of a Claude session.
Pricing: Both are free.
The stack that makes the most difference
If you only install 2 of these, install ChatSpry and Merlin. ChatSpry handles the output side — nothing valuable gets lost. Merlin handles the input side — you get AI context anywhere you need it without switching tabs. Together they cover the two biggest friction points in a real AI workflow.
The other 5 add value in specific contexts. Install them when you hit the problem they solve.