Free apps from SharewareOnSale - LopeEdit Pro, and Solve(mac)
The program has a built-in file browser, for instance, so it's easy to navigate to the text documents you need, and drag and drop them into LopeEdit. Although if you're creating files from scratch then the tabbed interface ensures that's very easy, too.
A powerful Find and Replace tool, with regular expression support, can send the results of your search to a separate pane. So if you run a particular search, you don't have to browse through the entire document to see every hit, because they're all displayed in a single window: very useful.
Solve is a calculator like no other! Solve solves as you type and features an innovative memory system to store and recall answers. Simply touch the answer to store it and touch the stored answer to use it in an expression.
Solve has four tabs that select four different calculators each with its own color. Multiply numbers, calculate a tip and find a square root all without clearing your results!
Plot graphs with a single touch! Solve plots 2D and 3D functions using the x, y and θ variables. When you use the x, y and θ variables in an equation the answer will say Touch to Plot. Touch this label to graph the equation.
also available is a "shortcuts" list
This neatly designed list is about that the most useful keyboard shortcuts for popular tools and online services. When we say 'most useful', we really mean it. We promise to share the best ones that are easy to learn and implement. We promise to not overwhelm you with another redundant list that you will never end up remembering. We've researched and tried and tried again, and finally picked the handful of them for each service.
You'll learn shortcuts for:
•Windows 7, Windows 8 and Windows 10
•Mac OS X
•Safari for Mac
•Microsoft Outlook for Windows
•Apple Mail for Mac
•Gmail for Web
•VLC Media Player
•KMPlayer for Windows
•Windows Media Player