VectorBuilder is the world's leading provider of vector construction and virus packaging services. Our highly intuitive online design tool, VectorBuilder.com, provides a very user-friendly workflow for you to design your desired vector with just a few mouse clicks, and all for free. VectorBuilder's ever-expanding collection of vector backbones, promoters and ORFs ensures you save money and valuable time compared to Do it Yourself (DIY) cloning. All vectors delivered come with a 100% sequence guarantee and VectorBuilder is also a source for premium quality downstream services including library generation, targeting vector and CRISPR vector design as well as BAC modification. VectorBuilder’s experts can provide top-quality advice on vector optimization and you can also send them your vectors as templates for subcloning. VectorBuilder’s flexibility truly offers custom vector design at its best and fastest, and with thousands of successfully completed and delivered vectors, VectorBuilder is quickly becoming the preferred method of cloning for institutes and biotech companies around the world.