LF Aligner is described as 'Helps translators create translation memories from texts and their translations. It relies on Hunalign for automatic sentence pairing. Input: txt, doc, docx, rtf, pdf, html. Output: tab delimited txt, TMX and xls. With web features' and is an app. There are more than 10 alternatives to LF Aligner for a variety of platforms, including Windows, Linux, Mac, Web-based and SaaS apps. The best LF Aligner alternative is Poedit, which is both free and Open Source. Other great apps like LF Aligner are Lokalize, OmegaT, PO-File Translation and BabelEdit.