丹尼部落

官方網站：http://www.nodesoft.com/EraseTemp/Default.aspx 
官方介紹：
EraseTemp is a utility that automatically deletes old temporary files from your computer.
（沒看錯，就只有一行）

程式作者的話：
After helping people with computer problems I discovered that many computers had a lot of old temporary files.
This wastes space on your hard drives and could be a stability problem.

One solution to this can be to just delete them in Autoexec.bat but some installations depend on files in the Temp directory to finalize an installation. A simple delete could make these apps to stop working. That’s why we started working on EraseTemp.

If you just run the application it deletes everything older than one day in the Temp folder(s).
It looks in you personal Temp folder in Documents and Settings, the Temp folder in the Windows folder and, if present, C:\Temp.
It also removes old dump files by default.
You can also use EraseTemp to delete old files, any number of days old, in any folder.

小巧的數學運算軟體，指令或排版不像Mathematica之類的專業軟體人性化，功能也遠遠不及巨型運算軟體，但他的優點是體積小，可使用免安裝版本。

官方網站：http://www.speqmath.com/index.php?id=1
官方介紹：
SpeQ is a small, extensive mathematics program with a simple, intuitive interface. All calculations are entered in a sheet. In there you can freely add, edit and execute all calculations. You can define variables and functions, and plot graphs of your functions. You can save your calculations for later re-use.

SpeQ is written to be an advanced but very easy to use math program. It is small and fast and runs on every Windows computer, also from an USB-key or floppy disk. SpeQ is useful for simple, brief calculations as well as working out sheets with extensive variable definitions, functions and complex calculations.

SpeQ is usable for engineers, students and pupils or simply as replacement of the Windows Calculator. 

SpeQ has the following features

Expression calculations with arithmetic, conditional, logical and bitwise operators
Around 100 built-in mathematical, physical and conditional constants
Around 60 built-in functions for Analysis, Arithmetic, Complex numbers, Hyperbolic, Integers, Logical, Probability, Numeral systems, Statistics, Trigonometry
Define your own variables and functions for use in calculations
Plot fully adaptable graphs, trace the plotted functions, save your graphs
Extensive support for units
Decimal, binary, hexadecimal and octal numeral systems
Calculations with lists
Complex number calculations
Colored workarea
Save and load sheets
Orderly overview of all available functions and constants in the Functionstree
A list with all defined variables and functions in the Memorylist
Context-sensitive help and a detailed users guide 

Download Here：
官方安裝版
官方免安裝版