go get github.com/antchfx/antch

type item struct {
    Title string `json:"title"`
    Link  string `json:"link"`
    Desc  string `json:"desc"`
}

type dmozSpider struct {}
func (s *dmozSpider) ServeSpider(c chan<- antch.Item, res *http.Response) {}

doc, err := antch.ParseHTML(res)
for _, node := range htmlquery.Find(doc, "//div[@id='site-list-content']/div") {
    v := new(item)
    v.Title = htmlquery.InnerText(htmlquery.FindOne(node, "//div[@class='site-title']"))
    v.Link = htmlquery.SelectAttr(htmlquery.FindOne(node, "//a"), "href")
    v.Desc = htmlquery.InnerText(htmlquery.FindOne(node, "//div[contains(@class,'site-descr')]"))
    c <- v
}

c <- v

type jsonOutputPipeline struct {}
func (p *jsonOutputPipeline) ServePipeline(v Item) {
	b, err := json.Marshal(v)
	if err != nil {
		panic(err)
	}
	os.Stdout.Write(b)
}

crawler := antch.NewCrawler()

crawler.UseCookies()

crawler.UseMiddleware(CustomMiddleware())

crawler.Handle("dmoztools.net", &dmozSpider{})

crawler.UsePipeline(newTrimSpacePipeline(), newJsonOutputPipeline())

startURLs := []string{
    "https://dmoztools.net/Computers/Programming/Languages/Python/Books/",
    "https://dmoztools.net/Computers/Programming/Languages/Python/Resources/",
}
crawler.StartURLs(startURLs)

go run main.go