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

Mentor Graphics Corporation (MENT) earns a A this week, jumping up from last week’s grade of C. Mentor Graphics Corporation manufactures, markets, and supports software and hardware electronic design automation products. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of MENT stock.

This week, QAD Inc. Class A’s (QADA) ratings are up from a D last week to a B. QAD Inc. Class A provides supply-chain-enabled enterprise resource planning software for mid-range and large multinational manufacturing companies. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of QADA stock.

Asure Software, Inc. (ASUR) boosts its rating from a B to a A this week. Asure Software, Inc. provides on-demand workforce management software and services worldwide. The company also gets A’s in sales growth and earnings revisions. For more information, get Portfolio Grader’s complete analysis of ASUR 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.