Feature by feature
| DomainIdea | Instant Domain Search | |
|---|---|---|
| Price | Free | Free (accounts are free too) |
| Where it runs | Mac app (macOS 26) | Website, any browser |
| Search speed | A second or two, straight from each registry | Results as you type, from its own index |
| Extensions checked | Any extension with an RDAP service, you pick which | 800+ |
| Registrar price comparison | No | Yes |
| Name suggestions | Similar & available variations of your name | Generator with AI suggestions, prefixes and suffixes |
| Aftermarket and for-sale listings | No | Yes |
| Bulk checking | Import a CSV or Excel list | 500 at once, 5,000 with an account |
| Save names | Unlimited, grouped into collections | 30 per device, unlimited with an account |
| Watch a taken domain | Yes, with expiry stage and estimated drop date | No |
| Alerts when a domain changes | Yes, macOS notifications | No |
| Track domains you own | Yes, with renewal dates, yearly cost and reminders | No |
| Website and email health checks | Yes: DNS, SSL, MX, SPF, DKIM, DMARC | No |
| Works in ChatGPT and Claude | No | Yes, free connector |
| Who sees your searches | Only the registries. Lookups go from your Mac | Instant Domain Search, and registrars you click through to |
Where Instant Domain Search is better
- Speed. Results stream in as you type, in a few milliseconds. It's the fastest way to try dozens of names in a minute.
- Prices. It shows what each registrar charges, so you can pick where to buy. DomainIdea doesn't compare prices.
- Names for sale. It includes aftermarket and premium listings, so you can see when a taken name has an asking price.
- Ideas. Its generator suggests names with AI, prefixes and suffixes. DomainIdea suggests close variations of a name you already have, not new names.
- Anywhere. It works in any browser and inside ChatGPT and Claude. DomainIdea needs a Mac running macOS 26.
Where DomainIdea is better
- Waiting for a taken domain. The watchlist reads a domain's registration status, shows its expiry stage and estimated drop date, checks more often as the drop gets close, and notifies you when it changes. Instant Domain Search doesn't watch domains.
- Keeping ideas. Save as many names as you like, with notes, in collections by project, and recheck them any time. Capture works from anywhere on your Mac with a keyboard shortcut or the menu bar.
- Domains you own. The portfolio keeps each domain's registrar, renewal date and yearly cost, reminds you before renewals, and checks that its website, SSL and email records are healthy.
- Privacy. Lookups go from your Mac straight to each registry, and your lists stay on your Mac. No account, and no search history on someone else's server.
- Live data. Every check asks the registry directly, so a result is never from yesterday's index.
Price
| DomainIdea | Instant Domain Search | |
|---|---|---|
| Cost | Free | Free |
| Account | None needed | Optional, free |
| Paid plans | None | Planned (premium data credits, Pro account), no prices yet |
Neither costs anything today. Domains themselves are bought from a registrar either way, and prices there vary a lot, especially for renewals. Our Black Friday domain deals post shows how a cheap first year can turn into an expensive renewal.
Which should you use?
- You're naming something today and want to try lots of names and buy the best one: Instant Domain Search.
- You collect name ideas over time, or the name you want is taken and you'd like to know if it ever frees up: DomainIdea.
- You own more than a handful of domains and want renewal dates and costs in one place: DomainIdea.
- You do all of the above: search in Instant Domain Search, then keep and watch the names in DomainIdea.
For a quick look at a single taken domain without installing anything, try our free domain expiry and drop-date checker.
FAQ
Is DomainIdea a good Instant Domain Search alternative?
For checking names quickly in a browser and comparing registrar prices, Instant Domain Search is hard to beat. DomainIdea is the better choice when you want to keep a list of ideas, watch taken domains until they drop, and track the domains you already own.
Is Instant Domain Search free?
Yes. Searching, saving domains and accounts are free. It has said it plans paid options for premium data and a Pro account later, but hasn't published prices.
Is DomainIdea free?
Yes. The Mac app is free to download and use. It needs macOS 26.
Can Instant Domain Search tell me when a domain expires?
Its search tells you a name is taken, but it doesn't watch domains or send alerts. Use our free domain expiry checker for a one-off check, or DomainIdea's watchlist to be told when the domain changes stage.
Can I use both?
Yes, and many people should. Search and compare prices on Instant Domain Search, then save the names you like and watch the taken ones in DomainIdea.
Sources
Checked on 3 November 2026.
- Best domain search tools in 2026 (Instant Domain Search: speed, 800+ extensions, price comparison, bulk search, free)
- Introducing user accounts (Instant Domain Search, 8 October 2026: 30 saved domains per device, 500 and 5,000 bulk limits, paid plans planned)
- Instant Domain Search in ChatGPT (Instant Domain Search: free connector, availability from a daily index)