HeavyBid is described as 'HCSS HeavyBid is estimation software built specifically for the construction industry'. There are four alternatives to HeavyBid for a variety of platforms, including iPad, iPhone, Online / Web-based, Self-Hosted solutions and SaaS. The best alternative is The EDGE. It's not free, so if you're looking for a free alternative, you could try Methvin Suite or eSUB Construction Software.
Methvin | Project management and estimation tool designed for the construction industry. It will make your life considerably easier; estimating projects, publishing tenders, producing comparisons, and helping to find potential business opportunities.