BigAl is a platform independent program for calculating really big numbers. It supports not only standard arithmetic, but also calculations with numbers stored in files, exact period determination, continued calculation with predefined factorials, fibonacci with customized seeds, lucas, factorization, ackermann, nth root, random number generation, and more.
File Juicer is a tool that extracts images, video, audio, or text from files which you can not open in any other way. It extracts JPEG, PNG, GIF, PDF, BMP, WMF, EMF, PICT, TIFF, Flash, Zip, HTML, WAV, AVI, MOV, MP4, MPG, MP3, AIFF, AU, WMV, or text from files containing data in those formats. It is useful if you have old files that cannot be opened with current applications, for emails with attachments you cannot open, for corrupt files or databases, for damaged or accidentally erased digital camera flash cards, and self extracting .exe files designed for Windows. It also extracts ZIP, SWF, RAR, and CAB files from some EXE files.
FreeOTFE4PDA is an "on-the-fly" (OTFE) transparent disk encryption program. Using this software, you can create one or more "virtual memory cards" on your PDA. Anything written to one of these cards will be automatically and securely encrypted before being stored. A PC version is also available, allowing data encrypted on your PC to be read/written on your PDA, and vice-versa.
IPplan is a Web-based, multilingual IP address management and tracking tool which simplifies the administration of your IP address space. It can handle a single network or multiple networks with overlapping address spaces. It features DNS administration, internationalization, importing of network definitions from routing tables, importing of definitions from TAB-delimited files and NMAP's XML format, support for multiple administrators with different access profiles (per group, per customer, per network, etc.), definitions of address space authority boundaries per group, finding free address space across a range, display of overlapping address spaces between networks, search capabilities, an audit log, statistics, circuit tracking, and tracking and sending SWIP/registrar information.