TextCompare is described as 'online text diff tool which supports many other programming languages as well' and is an website in the Development category. There are seven alternatives to TextCompare, not only websites but also apps for Windows, Mac and Linux. The best alternative is Diff Checker. It's not free, so if you're looking for a free alternative, you could try mergely or Text Comparator. Other great sites and apps similar to TextCompare are Draftable Compare (Free Personal), Text compare! (Free), DiffNow (Freemium) and Text Compare (Paid).
Text compare! is a online diff tool that allows you to easily spot the differences between to texts. Just paste two texts and hit the compare button. The two texts are shown side by side, with differences highlighted.
DiffNow lets you compare text files, documents, binary files, and archives up to 1024KB in size. You can either upload the files you wish to compare their content. Plain text, Word document, PDF documents, HTML, Python, binary files, zip archives, unicode.
Text Compare lets you instantly see the difference between two pieces of text. Compare text by paragraph, word or character. Paste in two pieces of text, and Text Compare will highlight what has been inserted in, or deleted from, the original text.