Name Checker on Internet for New Product or Service compared with Namechk and KnowEm| Name Checker on Internet for New Product or Service | Namechk | KnowEm |
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| What is checked: NameCheckr checks one name at once as a domain (for example .com, .net, .cc, .us, .ru) and as a username on social services. Results show as green for available and red for taken. | What is checked: Namechk checks about 36 domain variants and more than 100 sites and platforms, among them TikTok, Twitch, WordPress, eBay, Yelp and PayPal. Its pages give slightly different counts. | What is checked: KnowEm checks usernames on several hundred social networks. Its pages state over 330 and over 550, so the exact number is unclear. |
| Trademark screening: It does not search trademark registers. Free handles and domains do not mean the name is legally clear. | Trademark screening: It does not mention trademark checks on the page reviewed. | Trademark screening: KnowEm has a trademark check that searches the USPTO trademark database. This is limited to the United States and is not a legal clearance. |
| Cost: It is a free web tool that can be used on one page. | Cost: It is described as free and says no credit card is necessary. Name generators for business, product, domain and username ideas are included. | Cost: Checking is available online. KnowEm also sells services to secure usernames on many platforms, without prices in the sources reviewed. |
| Product use: It suits an early screening of product name candidates because everything is shown in a single visual summary. | Product use: It suits quick checks and generation of ideas, including gaming tags and platform specific usernames. | Product use: It suits a team that wants to register the same handle on many networks and also to screen US trademarks. |