Here are the "selling points" of BrewMate. To get a first impression, you can also have a look at some of the screenshots. 

• Simple, Fast & Accurate recipe formulation
• Save & Open recipes in BeerXML file format /  Open Promash Recipe files
  
• Fermentables Calculation can be switched from Percentage to Weight or vica verse "On The Fly" - Simple!
• Hop quantities can either be entered in Grams (g) / Ounces (oz)  or by Grams Per Litre (g/L) / Ounces Per Gallon (oz/Gal)
• Temperature support for both Celsius & Fahrenheit
• Volume support for both Litres and Gallons
• Colour Calculations in both SRM (Standard Reference Method) & EBC (European Brewing Convention)
• Balance Value / BU:GU Ratio  (Bittering Units to Gravity Units)
• Publish Recipe to Web Feature (check "Recipes" page above for examples)
• Boil / Mash Timers & Stopwatch (With support for Hop / Misc addition alarms!)
• No Chill Bitterness Adjustment
• BIAB (Brew In a Bag) Software Support
• Brewday Mode
• "Style Nazi" Mode
• Calendar for Tracking/Logging Beer Progress.
• Forum Friendly text export (for sharing recipes that are easily replicated from someone elses brewhouse)
• Extensive database of Grains/Hops/Yeasts/Miscellaneous Ingredients (with the ability to edit or add your own) 
• BJCP Style Guidelines
• Many tools incuded (Efficiency Calc, Strike Temp Calc, Refractometer Calc, Gravity Correction Calc, Boil Off Calc, Water Dilution Calc,Carbonation Calc, Alcohol % / Attenuation Calc, Hydrometer Temperature Calibration Calc, Timer)
• Backup feature (So you'll never lose a sacred recipe!)
• Portable (< 1 Megabyte) executable file (NO registry settings / bloatware / junk)
• it's FREE for life (Nothing, Nada, Zilch, Zip, Zero) with a growing community of users and actively updated!