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Create 2D CAD drawings with this free DWG AutoCAD LT work-alike.
Create, edit, organize, share, sign, and protect PDF documents.
Partition your hard drive safely and without data loss.
Create, convert, edit, and share PDF files.
Power up your project management.
Turn any computer into a realistic basketball scoreboard at very low cost.
Search files, folders and other data.
Protect and preserve original computer configurations.
Create, markup, and collaborate on PDF files.
Learn and practice writing Chinese characters.