Some of these tools are built specifically for domain brainstorming, others are general-purpose word tools that happen to be useful for coming up with names.
Domainr
The best tool for finding domain hacks and creative TLD combinations. Type in a word and it instantly shows available options across hundreds of TLDs, including synonyms. Fast and smart.
Namecheap Bulk Domain Search
Enter a word and check availability across 1,000+ TLDs at once. Activate "beast mode," select all TLDs, and hide unavailable domains. Great for discovering unexpected extensions for your keyword.
namecheap.com/domains/bulk-domain-search
ChatGPT
Great for generating keywords, synonyms, and word associations related to your industry. Give it a few example words and ask it to keep going — it's surprisingly good at surfacing terms you wouldn't think of.
OneLook
More than a dictionary. You can search for words that start or end with specific letters — useful when you're trying to find words that work with a particular TLD.
Thesaurus
Simple but effective for finding synonyms when you have a concept in mind but the obvious words are all taken.
One Word Domains
A curated list of available single-word domain names and those on the secondary market. Good for finding short, memorable names.