The problem for companies like Woolworths Limited (ASX: WOW) and the big four banks is that they’ve grown to such a large size that it’s nearly impossible for them to provide growth investors with the level of earnings growth they are looking for.

To find this level of growth I believe investors need to look beyond the blue chip shares we all know so well and dig a little deeper. Luckily the ASX is full of quality shares with strong growth prospects. So I have picked out three small-cap shares which I believe could one day become billion dollar companies. Here they are:

Hansen Technologies Limited (ASX: HSN)

Hansen Technologies is a developer of customer care and billing solutions for a wide range of clients based in the energy, telecommunications, and pay TV industries worldwide. The ability the company has at creating long-standing relationships with its clients is one key reason why I like Hansen Technologies. Of the 30 pay-TV operators on its books, the average customer tenure is a massive 11 years. I believe this helps create a solid foundation from which the company can grow.

The recent acquisition of US-based energy billing services company PPL Solutions could be a growth driver moving forward, with management expecting it to represent approximately 7% of worldwide EBITDA next year. Currently the company has a market cap of $660 million and I would not be surprised to see it become a billion dollar company in the future.

Kogan.com Ltd (ASX: KGN)

With a market capitalisation of around $150 million, this recently listed online retailer certainly has a long way to go before becoming a billion dollar company. But I have little doubt that Kogan has a lot of growth ahead of it. According to its prospectus, Kogan is expecting sales growth of 20% in FY 2017 to $241 million. On the bottom line this will mean net profit after tax of $2.5 million.

It is worth pointing out that these forecasts do not include the recent acquisition of the Dick Smith online store which I believe provides significant growth potential. As well as acquiring its online brand, it also received 1.3 million active subscribers who were not previously members of Kogan.com’s customer database. With the shares down almost 10% from its IPO, I believe now could be a good opportunity to make a buy and hold investment.

Webjet Limited (ASX: WEB)

With 10 consecutive years of solid top line growth, I believe Webjet has been one of the stand out performers on the ASX in the last decade. The good news is that thanks to the growth in tourism across its key markets, I feel sales can increase at a good rate for a number of years to come.

In its interim results the travel booking company delivered a very strong performance which saw EBITDA growth of 26.4% year-on-year. According to CommSec, the market is expecting earnings to grow at 24% per annum through to FY 2018. If it can deliver on these expectations then I can see the company making a climb towards a billion dollar market capitalisation.

Before you go out and invest in any of these companies I would highly recommend you check to see if you own one of these three rotten ASX shares. Each could be harming your portfolio and might be best swapped out in my opinion.

3 Rotten Shares to Sell, and 1 to Buy Today

After a double-digit rally for the ASX since 2016 lows, investors should be on high alert. You'll find a full rundown below of 3 shares we think you should avoid today plus one top pick worth buying, even if the market turns south and the RBA keeps rates at an "emergency low." Simply click here to uncover these stocks.

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Motley Fool contributor James Mickleboro has no position in any stocks mentioned. The Motley Fool Australia owns shares of Hansen Technologies. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Bruce Jackson.