Chrome Extensions for Startup and Investor Research (2026)

Most angel research happens in a browser, and most of it is copy-paste. You find a startup worth knowing about, wonder who funded them, open a second tab to check, a third to read up on the investor, and a fourth to work out how to reach them. A few extensions collapse that loop.

This is an honest look at which ones earn a place in the toolbar for startup and investor research — including ours, which we obviously have an interest in and have marked as such.

Why this research is so tab-heavy

• A company's site almost never says who backed them, and press coverage names the lead firm at best
• Angels are the hardest to trace: they rarely appear in the round announcement, and when they do it is a list of names with no context
• Once you have a name you still need their firm, focus and location before you can judge whether they are worth approaching
• Contact routes are scattered across personal sites, LinkedIn and old posts
• By the time one company is qualified you have five tabs open and have lost the list you were working through

Extensions worth having

AngelBacked (ours)

Open a startup's website and the toolbar icon tells you whether we hold a record for them. Click it and you get the angels and firms who backed the company, drawn from 58,000+ investors and 454,000+ portfolio relationships, with each investor's title, firm and location, and contact details where we have them.

It reads only the hostname of the tab you are on — never the page content — and it injects nothing into the sites you visit. Included with any paid AngelBacked plan.

Good for: answering "who funded this" without leaving the company's site. Not for: building the target list in the first place — that is what the directory is for.

LinkedIn Sales Navigator

Most useful for confirming that someone still holds the role you think they do. Titles change faster than any database refreshes, and an angel's day job matters when you are deciding how to approach them.

Good for: current role and tenure. Not for: telling you whether that person has ever written a cheque.

Email-finder extensions (Hunter, Apollo and similar)

General-purpose contact finders that suggest likely addresses for a domain. A reasonable fallback when someone publishes no contact route at all.

Good for: broad coverage and cheap occasional use. Not for: accuracy — pattern-guessed addresses bounce, and bounces cost you sending reputation you will want later.

Clipping tools (Notion Web Clipper and similar)

Capture the page into wherever you keep your pipeline. Storage rather than intelligence, but it keeps the research trail so you are not redoing work in a fortnight.

What to check before installing anything

An extension runs on the pages you visit, so it is worth thirty seconds of scrutiny — especially if you handle a data room in the same browser.

• What it reads. There is a large difference between an extension that reads the hostname of your tab and one that reads page content. The first knows which site you are on; the second can see whatever is on your screen.
• Whether it injects scripts. Content scripts run inside the pages you visit. Plenty of legitimate extensions use them, but one that does not need them is a smaller surface. Ours has none.
• Where the data goes. The Chrome Web Store requires a privacy policy for any extension handling user data, and the listing links to it. Read what is retained.
• The permissions on the listing. "Read and change all your data on all websites" is a far broader grant than access to a single API domain.

A realistic loop

1. Start from a list, not a search box. Work through a filtered set of companies or investors. The extension qualifies what is in front of you; it does not find it.
2. Qualify on the company's own site. Who backed them, and are those investors relevant to you? Seconds, rather than a tab full of press releases.
3. Take the contact and log it. Note the specific portfolio overlap you will reference in the first line. That reference is the part that gets replies.

Frequently asked

Is there a free extension that shows a startup's investors?
Not with contact data attached. Free tools can guess an email at a domain, but they cannot tell you who funded the company or who those people are. The database is the product.

Does the AngelBacked extension read the pages I visit?
No. Only the hostname of the active tab, so it can look that company up. Never page content, full URLs, paths, or your browsing history.

Do I need a separate subscription?
No — it is included with any paid AngelBacked plan.

Which browsers?
Chrome and any Chromium-based browser that installs from the Chrome Web Store: Edge, Brave and Arc.

Will an extension replace a database?
No, and it is worth being straight about that. An extension is a faster way into data you already have. It qualifies the company in front of you; it does not build the list, which is the harder half.

Get the AngelBacked extension, or read more about what it does.