Five software stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

This week, Envivio, Inc. (ENVI) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). Envivio provides software-based IP video processing and distribution solutions to mobile and broadband service providers, cable multiple system operators, and direct broadcast satellite service providers and content providers. In Portfolio Grader’s specific subcategories of Earnings Momentum, Earnings Revisions and Sales Growth, ENVI also gets A’s. Shares of the stock have been trading at an exceptionally rapid pace, up twofold from the week prior. For more information, get Portfolio Grader’s complete analysis of ENVI stock.

This week, Giant Interactive Group, Inc. Sponsored ADR (GA) pushes up from a B to an A rating. Giant Interactive Group develops and operates online games in the People’s Republic of China. The stock’s price of $11.56 is nearing the 52-week high of $11.62. Shares of the stock have been changing hands at an unusually rapid pace, twice the rate of the week prior. For more information, get Portfolio Grader’s complete analysis of GA stock.

Intuit (INTU) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. Intuit develops and markets business and financial management software solutions for small and medium sized businesses, financial institutions, consumers, and accounting professionals. For more information, get Portfolio Grader’s complete analysis of INTU stock.

Perfect World Co., Ltd. Sponsored ADR Class B (PWRD) boosts its rating from a B to an A this week. Perfect World develops and operates online games. For more information, get Portfolio Grader’s complete analysis of PWRD stock.

Evolving Systems, Inc. (EVOL) earns a B this week, jumping up from last week’s grade of C. Evolving Systems is a software company providing business and operational support services and solutions to the telecommunications industry. For more information, get Portfolio Grader’s complete analysis of EVOL stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.