This week, 4 Software stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, Kingtone Wirelessinfo Solution Holding Ltd. Sponsored ADR’s (KONE) ratings are up from a F last week to a B. Kingtone Wirelessinfo Solution Holding Ltd. Sponsored ADR operates as a developer and provider of mobile enterprise solutions in the People’s Republic of China. For more information, get Portfolio Grader’s complete analysis of KONE stock.

VirnetX Holding Corporation (VHC) shows solid improvement this week. The company’s rating rises from a C to a B. VirnetX Holding Corporation is engaged in the business of commercializing a portfolio of patents. For more information, get Portfolio Grader’s complete analysis of VHC stock.

Aware, Inc. (AWRE) improves from a B to a A rating this week. Aware, Inc. supplies various products for the biometrics and digital subscriber line (DSL) service assurance industries primarily in the United States and Germany. The company also gets A’s in operating margin growth, earnings growth, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of AWRE stock.

GSE Systems, Inc.’s (GVP) ratings are looking better this week, moving up to a A from last week’s B. GSE Systems, Inc. designs, develops, and delivers business and technology solutions. For more information, get Portfolio Grader’s complete analysis of GVP 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.