Seven 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”).

Qualys, Inc. (QLYS) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. In Portfolio Grader’s specific subcategories of Earnings Revisions, Earnings Surprise and Margin Growth, QLYS also gets A’s. For more information, get Portfolio Grader’s complete analysis of QLYS stock.

PTC Inc. (PTC) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. For more information, get Portfolio Grader’s complete analysis of PTC stock.

The rating of Magic Software Enterprises (MGIC) moves up this week, rising from a B to an A. Magic Software develops, markets, and supports software development and deployment technology. For more information, get Portfolio Grader’s complete analysis of MGIC stock.

This week, Vringo, Inc.’s (VRNG) ratings are up from a C last week to a B. Vringo provides products for mobile video entertainment and personalization. The stock price has risen 33.7% over the past month, better than the 1.3% decrease the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of VRNG stock.

Take-Two Interactive Software, Inc.’s (TTWO) ratings are looking better this week, moving up to a B from last week’s C. Take-Two Interactive Software publishes, develops and distributes interactive entertainment software and hardware. For more information, get Portfolio Grader’s complete analysis of TTWO stock.

This week, Mitek Systems, Inc. (MITK) pushes up from a C to a B rating. Mitek Systems is mainly engaged in the development and sale of software solutions. For more information, get Portfolio Grader’s complete analysis of MITK stock.

Shanda Games Ltd. Sponsored ADR Class A (GAME) earns an A this week, jumping up from last week’s grade of B. Shanda Games develops, sources, and operates Internet games in China. For more information, get Portfolio Grader’s complete analysis of GAME 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.