This week, 10 Software stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

Fair Isaac Corporation (FICO) improves from a B to a A rating this week. Fair Isaac Corporation provides analytics, including predictive modeling, decision analysis, intelligence management, decision management systems, and consulting services. The company also gets A’s in earnings surprise and return on equity. For more information, get Portfolio Grader’s complete analysis of FICO stock.

The rating of NetSuite Inc. (N) moves up this week, rising from a D to a B. NetSuite Inc. provides relationship management software solutions. The company also gets A’s in sales growth and earnings surprise. For more information, get Portfolio Grader’s complete analysis of N stock.

salesforce.com, inc.’s (CRM) ratings are looking better this week, moving up to a B from last week’s C. Salesforce.com, inc. offers businesses a technology platform for Internet-based computing, storage, and connectivity solutions. The company also gets A’s in sales growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of CRM stock.

Interactive Intelligence Group, Inc. (ININ) earns a B this week, jumping up from last week’s grade of C. Interactive Intelligence Group, Inc. provides software application suites for Voice over Internet Protocol business communications. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of ININ stock.

Paycom Software, Inc. (PAYC) gets a higher grade this week, advancing from a B last week to a A. The company also gets A’s in sales growth, operating margin growth, earnings growth, earnings revisions, earnings surprise, and return on equity. For more information, get Portfolio Grader’s complete analysis of PAYC stock.

Gigamon Inc. (GIMO) shows solid improvement this week. The company’s rating rises from a B to a A. The company also gets A’s in sales growth, earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of GIMO stock.

This week, Symantec Corporation (SYMC) pushes up from a C to a B rating. Symantec Corporation provides information security, storage, and systems management solutions to businesses and consumers. For more information, get Portfolio Grader’s complete analysis of SYMC 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. For more information, get Portfolio Grader’s complete analysis of MGIC stock.

This is a strong week for Datawatch Corporation (DWCH). The company’s rating climbs to B from the previous week’s C. Datawatch Corporation provides business intelligence/enterprise reporting, data transformation, and support center solutions. For more information, get Portfolio Grader’s complete analysis of DWCH stock.

Zynga Inc. Class A (ZNGA) is seeing ratings go up from a C last week to a B this week. Zynga Inc. Class A develops, markets, and operates online social games as live services played over the Internet and on social networking sites and mobile platforms. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of ZNGA 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.