This week, 3 Software stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Descartes Systems Group Inc. (DSGX) boosts its rating from a B to a A this week. Descartes Systems Group Inc. is a global provider of federated network and global logistics technology solutions that help its customers make and receive shipments and manage related resources. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of DSGX stock.

Exa Corporation (EXA) shows solid improvement this week. The company’s rating rises from a C to a B. Exa Corporation develops, distributes, and supports simulation software and services. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of EXA stock.

This week, Magic Software Enterprises Ltd.’s (MGIC) ratings are up from a C last week to a B. Magic Software Enterprises Ltd. develops, markets, and supports software development and deployment technology. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of MGIC 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.