The Authors of pdfforge.org have some additional projects that but may be interesting and helpful for you. This page gives an overview on these projects.
Images2PDF is the easy and fast way to convert images to pdf files. You can import different image file types, set different output formats und export all as a PDF file. Of course it is free to use.
fly2pdf is a free ActiveX-library which allows to create PDFs out of own applications easily. fly2pdf is released as OpenSource by the pdfforge.org Team under the Terms of the FairPlay License. This allows the joint development with the community. There are many samples coming with fly2pdf which show the possibilities of the library.
fly2pdf is not free for commercial usage. A Site license costs 149 €. This does not include support from the developers, but of course, there is the forum on pdfforge.org where the developers do their best to help with probelms and questions.