8 + 4 =

About Us

Posilco Online (Pty) Ltd (PoSilCo) is a web development and digital marketing company operating out of Cape Town, South Africa. We take a results-driven approach to everything we do. From the visual aspects to the functionality of your website.

Our comprehensive service offering includes Website Design, Hosting, SEO, Social Media Management, Custom Software Development, Email Marketing and Newsletter Campaigns and Company Profile Design. We believe that a website should be at the core of all digital marketing efforts and serve as an information hub that is constantly updated with exciting and fresh content that brings visitors back, attracts new visitors and creates ROI.

Our Story

Silas Pothas founded PoSil Consulting as a solo proprietor in 2004. Being an entrepreneur with extensive experience in project management, marketing and web design, PoSil went from strength to strength in a very short time. Continuous growth led to PoSil Consulting being registered as a Closed Corporation in 2009 and renamed and converted to Posilco Online (Pty) Ltd in 2019.

With our passion for design, extensive experience and global reach we continue to grow our family of happy clients.

At PoSilCo we build on proven web design principals, utilise the latest design methodology and project management methods. This allows us to deliver excellent solutions to our clients in a satisfactory rapid turnaround time.

Don’t just take our word for how awesome we are. See what our clients have to say.

Golf Buddies

We started to work with Silas from Posil Consulting 8 years ago when we took over Golf Buddies. We have experienced a very efficient co-operation which started with the hosting of our emails and website. Later PoSilCo developed a custom online system which supports our daily operations with bookings, invoicing and generating vouchers.

Just a few months ago, PosilCo redesigned our website in two language versions (English and German).

We have experienced a very close relation which has always been a win-win-situation for both parties.

Should you look for an experienced and tailor-made online solution  partner, we only can recommend to contact Silas at Posil Consulting.

Melco Conveyer Equipment

We started to work with PosilCo 14 years ago. They have helped us with site updates, and new site builds over the years. They also host our website for us. We have always experienced fast, friendly and efficient service from the team.

Should you look for an experienced and tailor-made online solution partner, we only recommend to contact PoSilCo Online.

TCN (The Christian Network)

TCN have been with PoSilCo for over 11 years now. The biggest benefit to us as a client is that they understand that changes and updates to our website are time sensitive and as a result, they always assist us in good time.  They keep our site and its relevant plugins up to date with the latest technology that suits our needs like a glove.  They have everything custom-made to suit our kind of industry and still keep it trendy and unique. We also appreciate the fact that we talk to only one person and he gets the job done, cutting out the frustration of time-consuming explaining and miscommunication. We have always experienced friendly and professional assistance.

SPAR - Protea Heights

In the 6 years that we have been dealing with PoSilCo, they have always gone above and beyond. They deliver great service and advice. The new website driven in store display system works perfectly and look beautiful! Glad we have a partner like PoSilCo handling our hosting and digital marketing.

4HDP Projects

We here at 4HDP have made use of various services of Posil Consulting which includes website design, transferring & hosting our domain as well as maintaining our company profile as requested on various occasions.

They were always more than eager to assist us in minor as well as more complex issues without hesitating in any way.

Their services is professional and flawless, I would gladly recommend them for any company or private individual.

Fides Consulting

We partnered with PoSilCo about 15 years ago and have never looked back. Excellent hosting solution for our emails and website. A number of site builds and lots of updates over the years. We have never experienced anything but great service.

In 2017 they also built a custom cloud application for us that we use to manage all of our candidates, clients and day to day operations.

It’s great having a provider who understands your needs.

I recommend and refer  you with confidence.


I was seriously impressed with the efficiency and professionalism of PoSilCo. It’s great having a provider who can do the aesthetics and creativity, while assisting with the technical aspects as well. My company logo.(MaxiQuest) translates the message we wish to share with our clients. I appreciate a provider who gets me and my business!

I recommend and refer  you with confidence.